| Election Name: | 1966 Newfoundland general election |
| Seat Change2: | 4 |
| Popular Vote2: | 50,316 |
| Percentage2: | 34.0% |
| Swing2: | 2.6pp |
| Last Election2: | 7 seats, |
| Premier | |
| Before Election: | Joey Smallwood |
| Posttitle: | Premier after election |
| After Election: | Joey Smallwood |
| Ongoing: | No |
| Seats2: | 3 |
| Leaders Seat2: | Humber East |
| Country: | Newfoundland and Labrador |
| Leader1: | Joey Smallwood |
| Type: | parliamentary |
| Election Date: | September 8, 1966 |
| Previous Election: | 1962 Newfoundland general election |
| Previous Year: | 1962 |
| Next Election: | 1971 Newfoundland general election |
| Next Year: | 1971 |
| Seats For Election: | 42 seats to the 34th General Assembly of Newfoundland |
| Majority Seats: | 22 |
| Leader Since1: | 1949 |
| Leader Since2: | 1966 |
| Leaders Seat1: | Humber West |
| Last Election1: | 34 seats, |
| Seats1: | 39 |
| Seat Change1: | 5 |
| Popular Vote1: | 91,613 |
| Percentage1: | 61.8% |
| Swing1: | 3.1pp |
| Leader2: | Noel Murphy |
| Flag Year: | 1952 |
The 1966 Newfoundland general election was held on 8 September 1966 to elect members of the 34th General Assembly of Newfoundland. It was won by the Liberal party.
| Party | Leader | 1962 | Seats won | % change | Popular vote | (%) | 34 | 39 | +15% | 91,613 | 61.8% | 7 | 3 | align=right | -57% | 50,316 | 34.0% | Calvin Normore | 0 | 0 | 0% | 2,725 | 1.8% | Other | 1 | 0 | align=right | -100% | 3,548 | 2.4% | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Totals | 42 | 42 | - | 149,371 | 100% | |||||||||||||||||||||||||||||