Betty Marsden was an English comedy actress. She is particularly remembered as a cast member of the radio series Beyond Our Ken and Round the Horne. Marsden appeared in two Carry On films, Carry On Regardless (1961) and Carry On Camping (1969).

Round the Horne is a BBC Radio comedy programme starring Kenneth Horne, first transmitted in four series of weekly episodes from 1965 until 1968. The show was created by Barry Took and Marty Feldman, who wrote the first three series. The fourth was written by Took, Johnnie Mortimer, Brian Cooke and Donald Webster.