| Election Name: | 1990 Connecticut gubernatorial election |
| Country: | Connecticut |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1986 Connecticut gubernatorial election |
| Previous Year: | 1986 |
| Next Election: | 1994 Connecticut gubernatorial election |
| Next Year: | 1994 |
| Election Date: | November 6, 1990 |
| Image1: | File:Lweicker.jpg |
| Nominee1: | Lowell Weicker |
| Running Mate1: | Eunice Groark |
| Party1: | A Connecticut Party |
| Popular Vote1: | 460,576 |
| Percentage1: | 40.4% |
| Nominee2: | John G. Rowland |
| Running Mate2: | Robert Jaekle |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 427,840 |
| Percentage2: | 37.5% |
| Image3: | File:Bruce Morrison.jpg |
| Nominee3: | Bruce Morrison |
| Running Mate3: | Sandra Bender |
| Party3: | Democratic Party (United States) |
| Popular Vote3: | 236,641 |
| Percentage3: | 20.7% |
| Governor | |
| Before Election: | Bill O'Neill |
| Before Party: | Democratic Party (United States) |
| After Election: | Lowell Weicker |
| After Party: | A Connecticut Party |
The 1990 Connecticut gubernatorial election included a three-way race for a seat left open when Governor William A. O'Neill declined to run for re-election. A Connecticut Party nominee Lowell Weicker narrowly won the election, becoming the first candidate who was not a member of one of the two major parties to win a gubernatorial election since the 1974 election in Maine.[1]