| Election Name: | 1936 Birmingham Erdington by-election |
| Type: | parliamentary |
| Country: | United Kingdom |
| Seats For Election: | Constituency of Birmingham Erdington |
| Ongoing: | no |
| Previous Election: | 1935 United Kingdom general election |
| Previous Year: | 1935 |
| Next Election: | 1945 United Kingdom general election |
| Next Year: | 1945 |
| Election Date: | 20 October 1936 |
| Candidate1: | John Cecil-Wright |
| Image1: | Con |
| Party1: | Conservative Party (UK) |
| Popular Vote1: | 27,068 |
| Percentage1: | 56.5% |
| Swing1: | 1.8% |
| Candidate2: | Charles Simmons |
| Party2: | Labour Party (UK) |
| Popular Vote2: | 20,834 |
| Percentage2: | 43.5% |
| Swing2: | 6.1% |
| MP | |
| Before Election: | John Eales |
| Before Party: | Conservative Party (UK) |
| After Election: | John Cecil-Wright |
| After Party: | Conservative Party (UK) |
The 1936 Birmingham Erdington by-election was held on 20 October 1936. The by-election was held due to the death of the incumbent Conservative MP, John Eales. It was won by the Conservative candidate John Wright.