Arthur Wellesley Dean Unionist James Blindell Liberal The 1929 Holland with Boston by-election was a by-election held on 21 March 1929 for the British House of Commons constituency of Holland with Boston in Lincolnshire.

The by-election was caused by the death of the Unionist Member of Parliament, Arthur Dean; who had held the seat at the 1924 general election.

The Labour Party candidate was George Blanco White, a lawyer who had stood here last time.

The Liberals chose a new candidate in James Blindell, a Grimsby councillor and managing director of a boot manufacturing business.

Blindell held the seat for the Liberals, with Van den Berg again standing for the Unionists, finishing second.