The 1950 Bristol South East by-election was a by-election held on 30 November 1950 for the 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 resigned from Parliament due to ill-health. The Labour candidate Tony Benn held the seat for his party. 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.

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