| Type: | by-election |
| Country: | Barbados |
| Turnout: | 67.5% |
| Previous Election: | 1976 Barbadian general election |
| Previous Year: | 1976 |
| Next Election: | 1981 Barbadian general election |
| Next Year: | 1981 |
| Election Date: | 6 July 1978 |
| Candidate1: | Richard Christopher Haynes |
| Image1: | 3x4.svg |
| Party1: | Democratic Labour Party (Barbados) |
| Popular Vote1: | 2,604 |
| Percentage1: | 64.74% |
| Candidate2: | Charles Hinds |
| Party2: | Barbados Labour Party |
| Popular Vote2: | 1,367 |
| Percentage2: | 33.99% |
| Candidate3: | Carl Haddock |
| Image3: | 3x4.svg |
| Party3: | Independent |
| Popular Vote3: | 51 |
| Percentage3: | 1.27% |
| MP | |
| Before Election: | Frederick Smith |
| Before Party: | Democratic Labour Party (Barbados) |
| After Election: | Richard Christopher Haynes |
| After Party: | Democratic Labour Party (Barbados) |
A by-election was held in the Barbadian constituency of the St. Michael South Central on 6 July 1978 after the resignation of Democratic Labour Party member Frederick Smith who was the representative of the constituency in the House of Assembly of Barbados.[1]
Richard Christopher Haynes won the election. Turnout was 67.5%.