2008 Glasgow East by-election

A by-election for the United Kingdom parliamentary constituency of Glasgow East was held on 24 July 2008, triggered by the resignation of incumbent Labour Party MP David Marshall, who stood down on health grounds. It was won by Scottish National Party candidate John Mason, who defeated Labour's Margaret Curran.

The election was significant as it was the second safe Labour seat to be contested, and to be lost, since a downturn in political fortunes for the incumbent Labour government under the premiership of Gordon Brown, and was also held in the wake of the resignation of Scottish Labour leader Wendy Alexander. The seat was the third-safest Labour seat in Scotland, and their 26th safest seat in the UK. Curran subsequently regained the seat for Labour at the 2010 general election.