| Portsmouth Langstone | |
|---|---|
| Former borough constituency for the House of Commons | |
| 1950–February 1974 | |
| Seats | one |
| Created from | Portsmouth Central, Portsmouth South, Portsmouth North and Fareham |
| Replaced by | Havant and Waterloo and Portsmouth North |
Portsmouth Langstone was a borough constituency in Portsmouth. It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom, elected by the first past the post system.