| Election Name: | 1994 Dublin South-Central by-election |
| Country: | Ireland |
| Type: | by-election |
| Ongoing: | no |
| Previous Year: | 1992 general election |
| Election Date: | 9 June 1994 |
| Next Year: | 1997 general election |
| Turnout: | (43.0%) |
| 2Blank: | Percentage |
| 3Blank: | Final count |
| Nominee1: | Eric Byrne |
| Party1: | Democratic Left (Ireland) |
| 1Data1: | 7,445 |
| 2Data1: | 27.8% |
| 3Data1: | 12,741 |
| Nominee2: | Michael Mulcahy |
| Party2: | Fianna Fáil |
| 1Data2: | 5,642 |
| 2Data2: | 21.1% |
| 3Data2: | 8,629 |
| Nominee3: | Brian Hayes |
| Party3: | Fine Gael |
| 1Data3: | 4,637 |
| 2Data3: | 17.3% |
| 3Data3: | – |
| TD | |
| Before Election: | John O'Connell |
| Before Party: | Fianna Fáil |
| After Election: | Eric Byrne |
| After Party: | Democratic Left (Ireland) |
A by-election was held in the Dáil Éireann Dublin South-Central constituency in Ireland on 9 June 1994. It followed the resignation on 24 February 1993 on health grounds of Fianna Fáil Teachta Dála (TD) and former Minister for Health John O'Connell.
The election was won by Dublin City Councillor and former TD Eric Byrne. This was the first time Democratic Left won a by-election.
Among the candidates were Senator and future TD Michael Mulcahy, Brian Hayes who would go on to serve as both a Minister of State and MEP, Dublin City Councillor Joe Connolly and South Dublin County Councillor and future Senator Cáit Keane.
On the same day, a by-election took place in Mayo West.