| 14289 | Alexandra College | | 1901-1933 | File relating to the Teacher Training Department, 19... | |
| 12776 | Armagh Diocesan Archive (RC) | | 1898
1901 | There is a detailed calendar of Letters of Most Rev.... | Cardinal Logue Archive |
| 16445 | Armagh Diocesan Archive (RC) | | 1901 | There is a detailed calendar of Letters of His Emine... | Cardinal Logue Archive |
| 16446 | Armagh Diocesan Archive (RC) | | 1901 | There is a detailed calendar of Letters of His Emine... | Cardinal Logue Archive |
| 20004 | Ballymena Central Library | | 1901-1914
1951-1973 | Council Minute Books:1901-19141951-1973 | Antrim County Council Records |
| 16240 | Birr Castle Archives | A-W | 1874-1892
1901-1993 | R/5/1-17: Includes the correspondence of Maria Herap... | The Rosse Papers |
| 24417 | Brother Allen Archive | Box 198 - File A | 1901 | Letter from Matthew Russell to Mary Patricia, 26 Dec... | Brother Allen Archival Collection |
| 24499 | Brother Allen Archive | Alice Milligan Box | 1893
1898
1899
1901
1902
1905
1909
1910
1917
1942
| Folder 12: Letter from [?] Milligan to Br Allen rega... | Brother Allen Archival Collection |
| 16715 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1901-1935 | Galbally Coal Fund Charity Book, 1901-1935, with ins... | Bolton Library Archive |
| 16805 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1901-1902 | Lismore Estate:Estate of Lady Lismore, Cash Book, 19... | Bolton Library Archive |
| 16820 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1878-1882
1885-1890
1895-1901 | Preachers' Books, Ballintemple:1895-19011885-189... | Bolton Library Archive |
| 16822 | Cashel, Ferns and Ossory Diocesan Archive (CoI) | | 1901-1956 | Preachers' Books, Ballintemple:1901-19161935-195... | Bolton Library Archive |
| 6107 | Clare County Archives | | 1901-1908 | Council Attendance Register, 12 January 1901 - 6 Dec... | Clare County Council |
| 6108 | Clare County Archives | | 1901-1908 | Finance Committee Minute Book, 14 January 1901 - 6 D... | Clare County Council |
| 20700 | Clare County Archives | | 1901 | Kilkee Town Commissioners, Board Minute Books, Augus... | Kilkee Town Commissioners |
| 16956 | Clare County Archives | | 1850-1865
1901-1902 | Rough Minute Books:August 1850 - March 1851March 185... | Corofin Poor Law Union |
| 13241 | Cork City and County Archives | U18 | 1892-1901 | (iv) List of licensed premises in Cork city, 1892-19... | Beamish and Crawford Collection |
| 14415 | Cork City and County Archives | CCCA/CP/CO/M | 1710-1732
1901-1906
1912-2016 | Records the major decisions and resolutions made by ... | Cork City Council Minutes |
| 23820 | Cork City and County Archives | | 1901-1940 | Corporation News Cuttings Books 1901-1940 | Cork City Council Records - Miscellaneous |
| 23830 | Cork City and County Archives | | 1901-1980 | Cork County Committee of Agriculture 1901-1980 | Cork County Council Records - Miscellaneous |
| 24037 | Cork City and County Archives | U196 | 1901 | Box 6 Contains legal documents, a number which relat... | Colthurst Papers |
| 24039 | Cork City and County Archives | U196 | 1900-1901 | Box 4 Includes correspondence relating to the estate... | Colthurst Papers |
| 20764 | Cork Public Museum | AQNOL1970:44/ | 1899
1901 | 2 Routine matters, containing correspondence, notice... | |
| 24055 | County Museum, Dundalk | Lot 374 | 1901 | Letter from Patrick McArdle to his mother while he w... | |
| 19048 | Cultural Heritage Services Library, Armagh | | 1901 | Copy of the census returns for County Armagh: 1901 (... | |
| 23773 | Delany Archive | Box Bp/23 File PF/ED/ | 1901 | :09: 16 December 1901 R. Blair Dublin to Bishop Patr... | Papers of Dr Patrick Foley, Bishop of Kildare & Leighlin |
| 3425 | Donegal County Archives | CH/BG/4/6/ | 1901-1908 | 313 Minute Book, Londonderry Rural District Number ... | Donegal Rural District Council Records |
| 7566 | Down County Museum | DB22 | 1839-1841
1886-1901 | 2 bound account books of Alexander Lacy, County Down... | |
| 7587 | Down County Museum | DN252 | 1901-1904 | 1 bundle of documents relating to the Cromie family ... | |
| 3194 | Dún Laoghaire-Rathdown County Council | LA2/58 | 1901-1911 | Register of internments in the old graveyard at Dalk... | Dalkey |
| 3208 | Dún Laoghaire-Rathdown County Council | LA3/ | 1899-1901 | Poor Rate Ledgers detailing monies received by colle... | Killiney-Ballybrack |
| 6235 | Enniskillen Library | | 1901 | Microfilm copy of the census of population for Count... | |
| 23153 | Fermanagh County Museum, Enniskillen Castle | FCM-1995-121 | 1901 | Typed memorandum regarding Inishmacsaint lace from t... | Eleanor Hassard Papers |
| 1651 | Fingal County Archive | BG78/AG/1-3 | 1901-1909 | North Dublin Board of Guardians Minute Books:BG/78/A... | North Dublin Poor Law Union |
| 1649 | Fingal County Archive | RDC61-RDC78/A4 | 1901-1930 | Celbridge Rural District Minute Books:RDC61/A/1 Dece... | Celbridge Rural District Council |
| 1655 | Fingal County Archive | RDC79/BA-RDC/137/A/2 | 1901-1925 | Dublin South Rural District Council:RDC79/BA/1 Inwar... | South Dublin Rural District Council |
| 20459 | Galway County Council Archives | | 1901-1925 | Minute Books:1901-1902June 1903-October 1904October ... | Loughrea Rural District Council |
| 21930 | Galway Diocesan Archives (RC) | | 1901-1950 | Box 30 Papers of Monsignor Joseph Cassidy 1901-1950. | |
| 57 | Irish Dominican Congregation Archives | H19 | 1895-1901 | Histories of the following families:1. Lumley, 1895-... | Dominican Archives, Cabra |
| 5135 | Irish Jesuit Archives | J27/ | 1901-1923
1912 | 'The Irish Monthly' (1901-1923):177 Card fro... | Papers of Fr Matthew Russell, SJ (1834 - 1912) |
| 22137 | Irish Jesuit Archives | J27/ | 1883
1887
1901 | 47 December 1883 -5 January 1901. A file of letters... | Papers of Fr Matthew Russell, SJ (1834 - 1912) |
| 22143 | Irish Jesuit Archives | J27/ | 1889-1901 | 72 31 October 1889 - 30 November 1901. A file of let... | Papers of Fr Matthew Russell, SJ (1834 - 1912) |
| 22173 | Irish Jesuit Archives | J27/ | 1878-1901 | 150 23 May 1878 -15 December 1901. A file of letters... | Papers of Fr Matthew Russell, SJ (1834 - 1912) |
| 5560 | Irish Labour History Museum | | 1901-1920 | Dublin Municipal Officers Association: Minute Books:... | Fórsa (IMPACT) |
| 24532 | Irish National Teachers' Organisation | | 1901 | Documentation regarding annual congress, annual repo... | |
| 2058 | Kerry Local Studies and Archives Department | RDC/73/AA/ | 1901-1909 | Rough Minute Books:1. August 1899 - February 19012. ... | Dingle Rural District Council |
| 2065 | Kerry Local Studies and Archives Department | RDC/112/A/ | 1901-1925 | Minute Books:1. August 1901 - July 19022. July 1902 ... | Listowel Rural District Council |
| 2066 | Kerry Local Studies and Archives Department | RDC/154/A/ | 1901-1925 | Minute Books:1. September 1900 - October 19012. Nove... | Tralee Rural District Council |
| 21873 | Kerry Local Studies and Archives Department | | 1891-1892
1901-1902 | Kerry County Council Minute Books: June 1891-July 18... | Kerry County Council |
| 21878 | Kerry Local Studies and Archives Department | RDC/100/AF/ | 1900-1901 | 1. Financial Minute Book August 1909 - December 1911... | Kenmare Rural District Council |
| 21879 | Kerry Local Studies and Archives Department | RDC/100/B/ | 1901-1904 | 1. Letter Books Outgoing 1901-1904 | Kenmare Rural District Council |
| 11717 | Kilkenny Local Studies Department | CR/D/28 | 1901-1938 | Kilkenny Corporation, Committee Minute Books:March 1... | Kilkenny Corporation |
| 20997 | King's Hospital School | 65-82 | 1886-1901 | 81 Ledger, 1886-1901. | King's Hospital Records |
| 21159 | King's Hospital School | 232-236A | 1874-1901 | 232 Account Book, 1874 - 1901. | King's Hospital Records |
| 3754 | King's Inns Library | B1/5-11 | 1901-1917 | Council Meetings, 1901-1917, includes among other is... | Records of the Honorable Society of King's Inns |
| 21615 | Laois Local Studies | C/ | 1901-1926 | 72. School Cash and Expenditure Book, 1901-1926. | Laois County Council |
| 22282 | Leitrim Local Studies Department | | 1901-1925 | Minutes of Quarterly Meetings:January 1901 - March 1... | Kinlough Rural District Council |
| 22287 | Leitrim Local Studies Department | | 1901-1925 | Minutes of Quarterly Meetings:January 1901 - April 1... | Mohill Rural District Council |
| 22292 | Leitrim Local Studies Department | | 1901-1921 | Minutes of the Quarterly Meetings:October 1901 - Jul... | Carrick-on-Shannon Rural District Council |
| 22300 | Leitrim Local Studies Department | | 1900-1901 | Minute Book:May 1900 - June 1901 | Ballinamore Rural District Council |
| 22338 | Leitrim Local Studies Department | | 1901-1912 | Misc. 38. Decisions of Superior Courts, July 1901-19... | Miscellaneous Records, Leitrim |
| 22317 | Leitrim Local Studies Department | | 1901-1907 | Misc. 17. McGriskens, Dressmakers, Drapers, Kiltyclo... | Miscellaneous Records, Leitrim |
| 22369 | Leitrim Local Studies Department | | 1904-1910
1900-1901 | Irish National Foresters' Minute Book, Ballinamo... | Miscellaneous Records, Leitrim |
| 13278 | Limerick Museum | AQNO (0000.4411) | 1901 | Photograph. Glass slide. Group of people, posed. Tit... | |
| 20056 | Little Company of Mary Sisters | LCM1 | 1901-1909 | 1/1/3 Copy foolscap volume of thirty six circular le... | Mother Mary Potter, Foundress |
| 1087 | Loreto Archives | | 1901-1919 | Correspondence with Rome, 1901 - 1916Correspondence ... | Press II Boxes IV and V |
| 5732 | Louth County Archives | 65-80 | 1890-1901 | Minute Books:65 June 1890 - December 189066 December... | Ardee Poor Law Union |
| 5733 | Louth County Archives | 81-96 | 1901-1913 | Minute Books:81 January 1901 - July 190182 August 19... | Ardee Poor Law Union |
| 14485 | Mayo Local History Department | | 1901-1932 | Quarterly Statement Books, 42 volumes, 1901-1932 | Mayo County Council |
| 14510 | Mayo Local History Department | | 1901-1911 | Executive Sanitary Officers Record and Report Book, ... | Ballinrobe Rural District Council |
| 14524 | Mayo Local History Department | | 1901-1968 | Minute Books, 13 volumes, 1901-1968 | Castlebar Urban District Council |
| 14537 | Mayo Local History Department | | 1901-1961 | Minute Books, 38 volumes, 1901-1961 | Ballina Urban District Council |
| 14535 | Mayo Local History Department | | 1901-1918 | Minute Books:7 December 1901-15 November 19027 Novem... | Castlebar Rural District Council |
| 14538 | Mayo Local History Department | | 1901-1961 | Receipt and Expenditure Accounts Ledger, includes de... | Ballina Urban District Council |
| 5770 | Meath Local Studies and Family History Department | LAM3/1/ | 1901-1944 | Navan Rural District Council Quarterly Minute Books:... | Navan Rural District Council |
| 20298 | Meath Local Studies and Family History Department | Box A/ | 1901 | 3 Farm expenditure, Pollocks, 1901. | Mountainstown Documents |
| 1129 | Millmount Museum, Drogheda | 435 FFK-454 FFK | 1901-1923 | 435 FFK Louth Rural District Ledger. Gives details ... | |
| 2113 | Monaghan County Museum | 1984:112 | 1899-1901 | Index Monaghan County Council Minutes 1899-1901. | |
| 11919 | Mount Melleray Abbey, Waterford | | 1901 | See for example: Number 8, Papers of Father Maurus O... | |
| 593 | National Archives of Ireland | BG/137/CG1 | 1901-1936 | Treasurer's Loan Repayment Book: September 1901-... | Rathdown Poor Law Union and Rural District Council |
| 629 | National Archives of Ireland | BG/137/ | 1901-1925 | Quarterly Returns of Births, Deaths and Marriages:KB... | Rathdown Poor Law Union and Rural District Council |
| 641 | National Archives of Ireland | BG/137/R1/AQ1 | 1901-1910 | Quarterly Minute Books: 1901 - 1910. | Rathdown Poor Law Union and Rural District Council |
| 3939 | National Archives of Ireland | s25230 | 1901 | Cipher telegram from Home Office, Crime Department S... | Crime Branch Special Records |
| 3940 | National Archives of Ireland | s24060 | 1900
1901 | 'Daughters of Erin' [Inghinidhe na h-É... | Crime Branch Special Records |
| 4086 | National Archives of Ireland | DUB55/F/B | 1901 | Miscellaneous Deeds etc., relating to the Hospital. ... | Records of the Coombe Hospital |
| 4945 | National Archives of Ireland | 1088/826-1088/826/3 | 1901-1916 | File relating to the Sessaigh O'Neil Co-operative Po... | Irish Agricultural Organisation Society |
| 4836 | National Archives of Ireland | 1190/7/ | 1895-1901 | Letters and bills to and from Agnes Sweetman, 47 Mer... | Sweetman Correspondence |
| 8846 | National Archives of Ireland | IB/2/37 | 1901 | Wills and other Testamentary Records: District Regis... | |
| 11493 | National Archives of Ireland | 1189/14/8 | 1900-1901 | Letters to John Woulfe Flanagan, 2 March 1900 -19 Ma... | Woulfe Flanagan |
| 11494 | National Archives of Ireland | 1189/14/10 | 1899-1901 | Miscellaneous correspondence to John Woulfe Flanagan... | Woulfe Flanagan |
| 11495 | National Archives of Ireland | 1189/15/6 | 1901-1903 | Letters to John Woulfe Flanagan from Edward, Frances... | Woulfe Flanagan |
| 11497 | National Archives of Ireland | 1189/15/10 | 1901-1903 | Miscellaneous correspondence, 1901-1903, includes le... | Woulfe Flanagan |
| 13277 | National Archives of Ireland | PEN1901/77 | 1901 | Jane Irwin, aged 24, born County Leitrim, servant, s... | General Prisons Board Penal Files, 1883-1925 |
| 14097 | National Archives of Ireland | 1190/4 | 1897-1901 | Eight letters from her brother Jim, 1897-1901. | Sweetman Correspondence |
| 14102 | National Archives of Ireland | 1190/4 | 1901 | Two letters from her brother Joseph, 1901 and no dat... | Sweetman Correspondence |
| 15471 | National Archives of Ireland | 999/71/1 | 1901 | Papers of the Kehoe, Keogh and Keough family, Clough... | Small Private Accessions |
| 15479 | National Archives of Ireland | 999/74 | 1901 | Original probate and copy will of Margaret Topham, 1... | Small Private Accessions |
| 15549 | National Archives of Ireland | 999/165 | 1901 | Copy of probate of the will of Sarah Crowley, 25 Cha... | Small Private Accessions |
| 15599 | National Archives of Ireland | 999/211/4 | 1901 | Letters of administration intestate of the estate of... | Small Private Accessions |
| 986 | National Library of Ireland | Ms11487 | c1901-1922 | Letters from Alice Stopford Green to Justice Oliver ... | |
| 1694 | National Library of Ireland | Ms10233 | 1901-1914 | Letters to Alice Stopford Green from Mrs D de Villie... | |
| 1915 | National Library of Ireland | Ms4146 | 1738-1901 | A printed family Bible containing manuscript notes o... | |
| 2417 | National Library of Ireland | Ms421 | 1901 | Diary and correspondence relating to Alice Stopford ... | |
| 2444 | National Library of Ireland | Ms9263 | c1901 | Includes a notebook of pious thoughts collected by S... | |
| 2664 | National Library of Ireland | Ms8005 | 1855-1901 | Letters to Sir Charles Gavan Duffy, 1855-1901, from ... | Gavan Duffy Papers |
| 2690 | National Library of Ireland | Ms15113 | 1901-1912 | Five letters to Alice Stopford Green from Jack B Yea... | Alice Stopford Green Papers |
| 3496 | National Library of Ireland | Ms10952 | 1901-1930 | Miscellaneous letters and other papers. Includes, am... | Fay Papers |
| 3615 | National Library of Ireland | Ms13125 | 1840-1901 | Letters to Aubrey de Vere in alphabetical order of c... | De Vere Papers |
| 2315 | National Library of Ireland | Ms13267 | 1901
1911
1916
1920-1929
1930-1939 | Correspondence of theatre critic and enthusiast Jose... | Joseph Holloway Papers |
| 2416 | National Library of Ireland | Ms10465(1-7) | 1901 | A diary, letters, photographs and press-clippings re... | Alice Stopford Green Papers |
| 3616 | National Library of Ireland | Ms13127 | 1840-1901 | Letters to Aubrey de Vere in alphabetical order of s... | De Vere Papers |
| 3742 | National Library of Ireland | Ms 13482 | 1900-1901 | Letters to T P Gill, including letters from, among o... | T.P. Gill Papers |
| 9012 | National Library of Ireland | Ms13698 | 1901-1930 | Letters of Dr Augustine Henry mainly dealing with na... | |
| 9029 | National Library of Ireland | Ms13770 | 1901 | Four letters of Major John McBride to his mother whi... | |
| 9038 | National Library of Ireland | Ms13825 | 1898-1901 | Thirty two letters of Mrs M Hamilton Luck, novelist ... | |
| 9057 | National Library of Ireland | Ms13941 | 1901-1925 | Letters from Thomas O'Brien to his relatives, includ... | William O'Brien Papers |
| 9169 | National Library of Ireland | Ms13876 | 1896-1901 | Reports of the Ballybay Town Sergeant, 1900-1901. Pa... | |
| 9255 | National Library of Ireland | Ms15718 | 1901 | Five autographed being the correspondence of Miss C ... | |
| 10735 | National Library of Ireland | Ms19782 | 1888-1901 | Recollections of Sarah Selina Blakeney (c1820-1900) ... | |
| 10838 | National Library of Ireland | Ms21186 | c1867-1901 | Includes photocopy of a Wages Book, Kinsella family,... | |
| 11912 | National Library of Ireland | Ms12701 | 1886-1901 | Ballina Poor Law Union Rough Minute Book, November 1... | Ballina Poor Law Union |
| 12013 | National Library of Ireland | Ms33245 | 1873-1901 | Miscellaneous correspondence, includes: Letter from ... | Rosamund Jacob Papers |
| 12261 | National Library of Ireland | Mss12535-12545 | 1901-1922 | Claremorris Poor Law Union Minute Books, November 19... | Claremorris Poor Law Union |
| 18965 | Offaly Archives | OCL TRDC36/10/1 | 1899-1901 | RDC No. 2:1 Minute Book: April 1899 - October 1901, ... | Records of Tullamore Rural District Council |
| 18990 | Offaly Archives | OCL P17 | 1868-1901 | 1 bound volume. Rental of the estate of the Earl of ... | Rental of the Estate of the Earl of Charleville |
| 18956 | Offaly Archives | OCL TRDC36/1 | 1901-1923 | 13 Minute Books1: November 1901 - June 19042: June 1... | Records of Tullamore Rural District Council |
| 21403 | Our Lady's Hospital, Cork | | 1894-1901 | Photograph by Dr W T Scanlon, Assistant Medical Offi... | |
| 16566 | Presentation Sisters Congregational Archives | DON1/98 | 1901 | Letters of Canon Sheehan to Mother Ita O'Connell... | Presentation Sisters South West Province - St Joseph's Convent, Doneraile |
| 6605 | Public Record Office of Northern Ireland | D/1717/2 | c1901 | Manuscript notebook with genealogical notes on the O... | |
| 6637 | Public Record Office of Northern Ireland | D/1790/3/1 | 1901-1902 | Committee Minute Book of Armagh Catholic Ratepayer's... | McLaughlin Papers |
| 8420 | Public Record Office of Northern Ireland | T/2643/1 | 1899-1901 | Account book of Mrs McClartan with the Star Bakery, ... | |
| 6368 | Public Record Office of Northern Ireland | T/1769 | 1865-1866
1901 | T/1769/3 Copy of the emigrant diary of Elizabeth An... | |
| 6528 | Public Record Office of Northern Ireland | D/1424/ | 1760-c.1901 | D/1424/1/4 Volume of copies of correspondence of Cat... | Kirkpatrick Papers |
| 6595 | Public Record Office of Northern Ireland | D/1696 | 1893-1901 | 3 Irish Land Commission Receivable Orders to Mrs S S... | |
| 6845 | Public Record Office of Northern Ireland | D/3480/59 | 1901-1945 | The Sir Robert Lynd papers comprise of 165 documents... | Sir Robert Lynd Papers |
| 7730 | Public Record Office of Northern Ireland | LA/82/ | 1901-1922 | Local Authority records are closed for 30 years from... | Crossmaglen Rural District Council Records |
| 7859 | Public Record Office of Northern Ireland | T/1086/1 | 1650-1901 | Copy pedigree of the Pim family, Leicestershire and ... | |
| 7962 | Public Record Office of Northern Ireland | T/1342/1-10 | 1800-1901 | Copies of minutes and accounts of a Presbyterian Poo... | |
| 8052 | Public Record Office of Northern Ireland | T/1608 | 1901-c.1932 | Genealogical notes relating to the McConnell family,... | |
| 877 | Religious Society of Friends in Ireland Historical Library | Mss Box 13 | 1801-1901 | Cork and Youghal Papers: Old Account Book containing... | Handlists: Mss Boxes, Pamphlets Boxes, etc. |
| 1386 | Religious Society of Friends in Ireland Historical Library | | 1884-1901 | Maria J Wright, (1856-1947): Scrapbook of watercolou... | Museum Collection |
| 9977 | Religious Society of Friends in Ireland Historical Library | PM/Dub I/C1 | 1901-1910 | Eustace Street Preparative Meeting, Minutes of the C... | |
| 9986 | Religious Society of Friends in Ireland Historical Library | PM/DubI/A4 | 1901-1910 | Eustace Street Joint Preparative Meeting Minutes, 19... | |
| 23701 | Representative Church Body Library | | 1871-1901 | Box 24 Miscellaneous bound volumes, 1871-1901. | Mrs Smyly's Homes |
| 22085 | Representative Church Body Library | B5 | 1895-1900
1901-1907
1966 | St Fin Barre's Parish, Register of Parishioners:... | St Fin Barre's Cathedral Cork Archive |
| 23747 | Representative Church Body Library | Ms 89 | 1901
1918 | Minutes, accounts and correspondence relating to the... | Irish Guild of Witness |
| 24934 | Royal Irish Academy of Music | | 1899-1901 | 2: 22 November 1899-17 April 1901, routine matters, ... | |
| 24943 | Royal Irish Academy of Music | 1120/3 | 1901-1903 | 3: 26 November 1901 - 17 February 1903, on routine, ... | |
| 24966 | Royal Irish Academy of Music | 1120/11 | 1890-1901 | 1: 1890 - 1901, register of subscribers to RIAM arra... | |
| 24219 | Sunbeam House | Box no. 134 | 1901-1949 | Sunbeam House residents born before 1930Minute book ... | |
| 13267 | Tipperary Museum of Hidden History | AQNO1992.218 | 1899-1901 | A photocopy of the United Irish League, East Tippera... | |
| 10174 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs7890/8 | 1901-1902
1906 | Childers Photograph Collection, boating photographs.... | Erskine Childers Papers |
| 10297 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs8968 | 1900-1901 | English Language Lecture Notebook of Catherine B Sen... | |
| 10471 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs6892 | 1882-1901 | Correspondence of Mrs Anne Deane, arranged alphabeti... | Dillon Papers |
| 11136 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs5026 | 1901-1922 | Household Account Book of Robin V O'Brien begun Nove... | O'Brien Family |
| 11209 | Trinity College Dublin, Manuscripts and Archives Department | V159-166 | 1901-1929 | Pot Lane and Gorey Bridge Weekly Tenants Rental: 19... | Courtown Papers |
| 11933 | Trinity College Dublin, Manuscripts and Archives Department | TCDMs10221 | 1901 | Diary of Nancy Campbell, 1901. | Joseph Campbell Papers |
| 9868 | UCC Special Collections & Archives | BL/EP/G/1506-1507 | 1901-1926 | Autograph Books of Christine Chichester, containing ... | Grehan Estate Collection |
| 22802 | UCD Archives | P106 | 1901-1987 | Education, 1912-1927Family and personal corresponden... | Sighle Humphreys Papers |
| 6217 | Ulster University Archive & Special Collections, Coleraine Campus | STEL 4 | 1901-c1980s | Stelfox Papers: Box file of letters labelled 'Co... | Arthur Wilson Stelfox Papers |
| 13279 | University of Galway Archives | P26 | 1901-1905 | Medical Officer's Returns for Portumna Dispensary Di... | |
| 18601 | University of Limerick Special Collections and Archives | P/1 (Section F) | 1901-1949 | Section F: Desmond Windham Otho FitzGerald (1901-194... | The Glin Papers |
| 5955 | Waterford City Archives | CLA | 1901-1904 | Accounts regarding payments made by Waterford Corpor... | Records of the City Law Adviser |
| 9924 | Waterford County Archives | RDC/YGHL | 1901-1924 | Minutes recording proceedings of quarterly meetings ... | Youghal Rural District Council |
| 19364 | Westmeath County Archives Department | | 1901-1949 | Athlone Urban District Council Minute Books:October ... | Athlone Local Authority Records |
| 22801 | Wicklow Library and Archives | | 1901-1932 | Register of Persons Admitted and Discharged from the... | Shillelagh Poor Law Union |