The Gravesend by-election, 1947 was a by-election held on 26 November 1947 to fill the vacant British House of Commons seat of Gravesend. The vacancy arose when the sitting Member of Parliament (MP), Garry Allighan, was expelled from the House for making allegations of corruption. The seat was considered a marginal, having been won at the 1945 general election from the Conservatives, who had held it since the 1924 general election.