| Election Name: | 1966 Trinidad and Tobago general election |
| Country: | Trinidad and Tobago |
| Type: | parliamentary |
| Previous Election: | 1961 Trinidad and Tobago general election |
| Previous Year: | 1961 |
| Next Election: | 1971 Trinidad and Tobago general election |
| Next Year: | 1971 |
| Majority Seats: | 19 |
| Turnout: | 65.8 (22.3 pp)[1] |
| Image1: | Eric Williams (cropped).jpg |
| Leader1: | Eric Williams |
| Leader Since1: | 15 January 1961 |
| Party1: | People's National Movement |
| Leaders Seat1: | Port of Spain South |
| Last Election1: | 20 seats, 57.0% |
| Seats1: | |
| Seat Change1: | 4 |
| Popular Vote1: | 158,573 |
| Percentage1: | 52.4% |
| Swing1: | 4.6 pp |
| Leader2: | Rudranath Capildeo |
| Leader Since2: | 31 August 1962 |
| Party2: | DLP |
| Leaders Seat2: | Saint Augustine |
| Last Election2: | 10 seats, 41.7% |
| Seat Change2: | 2 |
| Popular Vote2: | 102,792 |
| Percentage2: | 34.0% |
| Swing2: | 7.7 pp |
| Prime Minister | |
| Posttitle: | Subsequent Prime Minister |
| Before Election: | Eric Williams |
| Before Party: | People's National Movement |
| After Election: | Eric Williams |
| After Party: | People's National Movement |
General elections were held in Trinidad and Tobago on 7 November 1966.[2] The result was a victory for the People's National Movement, which won 24 of the 36 seats. Voter turnout was 65.8%.[3]