| Election Name: | 1934 Twickenham by-election |
| Candidate1: | Alfred Critchley |
| Turnout: | 55.5% (3.6%) |
| Registered: | 81,529 |
| Swing2: | 0.1% |
| Next Year: | 1935 |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1932 Twickenham by-election |
| Previous Year: | 1932 |
| Election Date: | 22 June 1934 |
| Next Election: | 1935 United Kingdom general election |
| Seats For Election: | Constituency of Twickenham |
| Percentage1: | 56.1% |
| Party1: | Conservative Party (UK) |
| Country: | United Kingdom |
| Popular Vote1: | 23,395 |
| Candidate2: | Percy Holman |
| Party2: | Labour Party (UK) |
| Popular Vote2: | 19,890 |
| Percentage2: | 43.9% |
| MP | |
| Before Election: | Hylton Murray-Philipson |
| Before Party: | Conservative Party (UK) |
| After Election: | Alfred Critchley |
| After Party: | Conservative Party (UK) |
| Swing1: | 0.1% |
| Map Size: | 250px |
The 1934 Twickenham by-election was a parliamentary by-election held on 22 June 1934 for the British House of Commons constituency of Twickenham in Middlesex.
The seat had become vacant when the constituency's Conservative Member of Parliament (MP), Hylton Murray-Philipson, died on 24 May 1934, aged 31. He had held the seat since a by-election in 1932.
The result was a victory for the Conservative candidate Alfred Critchley, who had stood for the Empire Free Trade Crusade and the United Empire Party in the 1931 Islington East by-election and as a Conservative at the 1929 general election.