| Election Name: | 1950 Bristol South East by-election |
| Type: | parliamentary |
| Turnout: | 61.2% (23.9 pp) |
| Seats For Election: | Bristol South East constituency |
| Ongoing: | no |
| Previous Election: | 1950 United Kingdom general election |
| Previous Year: | 1950 |
| Next Election: | 1951 United Kingdom General Election |
| Next Year: | 1951 |
| Election Date: | 30 November 1950 |
| Candidate1: | Tony Benn |
| Image1: | Tony Benn 1967.jpg |
| Party1: | Labour Party (UK) |
| Popular Vote1: | 19,367 |
| Percentage1: | 54.6% |
| Swing1: | 5.9 pp |
| Candidate2: | James Lindsay |
| Party2: | Conservative Party (UK) |
| Popular Vote2: | 12,018 |
| Percentage2: | 35.2 |
| Swing2: | 8.4 pp |
| Candidate3: | Doreen Gorsky |
| Party3: | Liberal Party (UK) |
| Popular Vote3: | 2,752 |
| Percentage3: | 8.1% |
| Swing3: | 1.4 pp |
| MP | |
| Before Election: | Stafford Cripps |
| Before Party: | Labour Party (UK) |
| After Election: | Tony Benn |
| After Party: | Labour Party (UK) |
The 1950 Bristol South East by-election was a by-election held on 30 November 1950 for the British House of Commons constituency of Bristol South East in the city of Bristol. The seat had become vacant when the constituency's Labour Member of Parliament (MP) Sir Stafford Cripps had resigntion from Parliament due to ill-health.
The Labour candidate Tony Benn held the seat for his party.[1] It was the first of four by-election victories for Benn in the course of his 45-year career in Parliament, the others being Bristol South East in 1961, the same seat in 1963 and Chesterfield in 1984.