| Election Name: | 1974 London local elections |
| Turnout: | 36.3% (2.4%)[1] |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | London local elections, 1971 |
| Previous Year: | 1971 |
| Next Election: | London local elections, 1978 |
| Next Year: | 1978 |
| Seats For Election: | All 1,867 on all 32 London boroughs |
| Election Date: | 2 May 1974 |
| 1Blank: | Councils |
| 2Blank: | Councils +/– |
| 3Blank: | Councillors |
| 4Blank: | Councillors +/– |
| Party1: | Labour Party (UK) |
| Popular Vote1: | 782,591 |
| Percentage1: | 41.9% |
| 1Data1: | 18 |
| 2Data1: | 3 |
| 3Data1: | 1,090 |
| 4Data1: | 131 |
| Party2: | Conservative Party (UK) |
| Popular Vote2: | 761,403 |
| Percentage2: | 40.8% |
| 1Data2: | 13 |
| 2Data2: | 3 |
| 3Data2: | 713 |
| 4Data2: | 116 |
| Party3: | Liberal Party (UK) |
| Popular Vote3: | 244,725 |
| Percentage3: | 13.1% |
| 1Data3: | 0 |
| 3Data3: | 27 |
| 4Data3: | 18 |
| Map Size: | 400px |
Local government elections took place in London, and some other parts of the United Kingdom on Thursday 2 May 1974. Ward changes took place which increased the total number of councillors by 4 from 1,863 to 1,867.
All London borough council seats were up for election. The previous Borough elections in London were in 1971.[2]
Labour won a narrow victory in terms of votes, winning 41.9% to the Conservatives' 40.8%, but won a decisive victory in seats, winning 1,090 to the Conservatives' 713.[3]
| Party | Votes won | % votes | Change | Seats | % seats | Change | Councils | Change | |
|---|---|---|---|---|---|---|---|---|---|
| 782,591 | 41.9 | 1,090 | 58.4 | -131 | 18 | -3 | |||
| 761,403 | 40.8 | 713 | 38.2 | +116 | 13 | +3 | |||
| 244,725 | 13.1 | 27 | 1.4 | +18 | 0 | ±0 | |||
| Others | 78,479 | 4.0 | 37 | 2.0 | +1 | 0 | ±0 | ||
| n/a | n/a | n/a | n/a | n/a | 1 | ±0 | |||
|}