| Election Name: | 1973 Manchester Exchange by-election |
| Type: | parliamentary |
| Country: | United Kingdom |
| Seats For Election: | Constituency of Manchester Exchange |
| Ongoing: | no |
| Previous Election: | 1970 United Kingdom general election |
| Previous Year: | 1970 |
| Election Date: | 27 June 1973 |
| Candidate1: | Frank Hatton |
| Image1: | Lab |
| Party1: | Labour Party (UK) |
| Popular Vote1: | 5,348 |
| Percentage1: | 55.33% |
| Swing1: | 13.20% |
| Candidate2: | Michael Steed |
| Party2: | Liberal Party (UK) |
| Popular Vote2: | 3,525 |
| Percentage2: | 36.47% |
| Candidate3: | William J. Loftus |
| Image3: | Con |
| Party3: | Conservative Party (UK) |
| Popular Vote3: | 683 |
| Percentage3: | 7.07% |
| Swing3: | 20.74% |
| MP | |
| Posttitle: | Subsequent MP |
| Before Election: | William Griffiths |
| Before Party: | Labour Party (UK) |
| After Election: | Frank Hatton |
| After Party: | Labour Party (UK) |
| Map Size: | 200px |
The 1973 Manchester Exchange by-election of 27 June 1973 was held after the death of William Griffiths on 14 April of the same year. The Labour Party won the by-election in what had traditionally been a safe seat.[1]
Due to an administrative oversight, the by-election was held on a Wednesday, rather than the Thursday which had been usual since the mid-1960s. Only one by-election since has been held on a day other than a Thursday, the 1978 Hamilton by-election.