Betty Marsden (1919-1998) was a British comedy actress.

In the radio series Beyond our Ken, she played Fanny Haddock, a takeoff of Fanny Craddock. In the radio series Round the Horne, she played a similar role (Daphne Whitethigh), as well as Lady Counterblast (née Clissold), Buttercup Gruntfuttock, Dame Celia Molestrangler, and others.

She was also in a number of Carry On movies, including Carry On Camping (playing Terry Scott's wife) and Carry On Regardless (playing Mata Hari).

She also appeared in the theatre.