Conservative The 1940 Newcastle upon Tyne North by-election was a parliamentary by-election held on 7 June 1940 for the British House of Commons constituency of Newcastle upon Tyne North.

Headlam had been MP for Barnard Castle from 1924 to 1929 and from 1931 to 1935, and had held several junior ministerial posts.

He had also contested the Gateshead by-election in 1931, coming a close second in what had been a safe seat for Labour.

On a very low turnout, the result was an overwhelming victory for Headlam, who took 71% of the votes.

This article about a by-election to the Parliament of the United Kingdom in England is a stub.