John Douglas Naysmith (1 April 1941 – 2 July 2023) was a British Labour Co-operative politician who was the Member of Parliament (MP) for Bristol North West from 1997 until standing down at the 2010 general election.

He first stood for Parliament at the 1987 General Election for Cirencester and Tewkesbury, where he was defeated by the then Secretary of State for the Environment Nicholas Ridley.

He contested Bristol North West at the 1992 General Election when he lost out by a margin of just 45 votes to the sitting Conservative MP, Michael Stern.

Naysmith was a member of two select committees: Health and Regulatory Reform, and he campaigned successfully to persuade the Government to propose the comprehensive smoking ban which came into force in July 2007.

The number of votes cast for him and his Conservative opponent was the same and the result was decided by the returning officer drawing Naysmith's name from a ballot box.