| Office: | Senator |
| Term Start: | 2 January 1940 |
| Term End: | 26 July 1943 |
| Constituency: | Nominated by the Taoiseach |
| Office1: | Senator |
| Term Start1: | 20 June 1929 |
| Term End1: | 29 May 1936 |
| Office2: | Teachta Dála |
| Term Start2: | June 1922 |
| Term End2: | August 1923 |
| Constituency2: | Dublin Mid |
| Office3: | Lord Mayor of Dublin |
| Term Start3: | 1921 |
| Term End3: | 1924 |
| Predecessor3: | Thomas Kelly |
| Term Start4: | 1917 |
| Term End4: | 1920 |
| Predecessor4: | James Gallagher |
| Successor4: | Thomas Kelly |
| Birth Date: | 4 March 1864 |
| Birth Place: | Dublin, Ireland |
| Death Place: | Dublin, Ireland |
| Nationality: | Irish |
| Education: | Belvedere College |
Laurence O'Neill (4 March 1864 – 26 July 1943) was an Irish politician and corn merchant who served as Lord Mayor of Dublin from 1917 to 1924, serving through the Irish War of Independence and the Irish Civil War.[1] [2] He refused an offer to act as Crown Prosecutor after the Easter Rising. During the 1920 Irish hunger strikes, O'Neill actively supported the demands of the 36 hunger strikers in Mountjoy Prison.[3]
During his time as an elected official, O'Neill was criticised for "doing little to solve Dublin's dreadful housing problem".[2] The problem could not be solved without generous government aid, which was not forthcoming, as the UK was involved in a world war.[2] In an effort to retore peace during the 1922 Battle of Dublin, O'Neill chaired a committee of prominent women who met with military leaders on both sides.[4] O'Neill was elected to Dáil Éireann as an independent Teachta Dála (TD) for Dublin Mid at the 1922 general election.[5] He did not contest the 1923 general election and he was an unsuccessful candidate at the September 1927 general election.
He was elected to the Irish Free State Seanad Éireann at a by-election on 20 June 1929 to fill the vacancy caused by the resignation of Henry Petty-Fitzmaurice.[6] He was re-elected to the Seanad for a 9-year term in 1931 and served until the Free State Seanad was abolished in 1936. He was nominated by the Taoiseach on 2 January 1940 to the 3rd Seanad. He did not contest the 1943 Seanad election.