Duncan Bell (born 16 January 1955) is a Scottish stage and screen actor.
In September 2001 he played Sergeant Dennis Merton in Britain's biggest TV drama series Heartbeat. The role of Merton brought back childhood memories for Duncan as he spent holidays in Scarborough, close to where most of the programme is filmed.
In January 2003 Duncan found out he was to become a first-time father, and decided to leave. In September 2003, Duncan became a father to a baby girl and left Heartbeat in July 2004. In 2008 he appeared as a guest star in Foyle's War.