The 1924 City of London by-election was a parliamentary by-election held on 1 February 1924 for the British House of Commons constituency of City of London, which covered the "Square Mile" which was the United Kingdom's traditional financial district.
Banbury had held the seat since a 1906 by-election, following his defeat at Peckham in the 1906 general election.
The Conservative Party selected as its candidate Sir Vansittart Bowater, who had been Lord Mayor of London in 1913.
The Liberal Party selected Henry Bell, who was a managing director of Lloyds Bank.
Bowater was comfortably elected, and would represent the constituency until his death in 1938, precipitating another by-election.