The 1939 Ripon by-election was a parliamentary by-election held in the United Kingdom on 23 February 1939 for the House of Commons constituency of Ripon in the West Riding of Yorkshire.

The Conservative Party held the seat.

In the 1945 general election, the Conservatives continued holding the seat.

• British Parliamentary Election Results 1918-1949, compiled and edited by F.W.S. Craig (The Macmillan Press 1979)