The Bishop Auckland by-election, 1929 was a parliamentary by-election held on 7 February 1929 for the British House of Commons constituency of Bishop Auckland in County Durham. The seat had become vacant on 22 December 1928 when the constituency's Labour Member of Parliament (MP), Ben Spoor had died aged 50. He had been elected for the previously Liberal-held seat at the 1918 general election, and held it through three further general elections.