Willo the Wisp is a British cartoon series originally produced in 1981 by the BBC and narrated by Kenneth Williams. It became popular with children and adults, as it bridged the gap between the end of weekday children's programming and the early evening news. A second series was produced in 2005.

Kenneth Charles Williams was a British actor and comedian. He was best known for his comedy roles and in later life as a raconteur and diarist. He was one of the main ensemble in 26 of the 31 Carry On films, and appeared in many British television programmes and radio comedies, including series with Tony Hancock and Kenneth Horne, as well as being a regular panellist on BBC Radio 4's comedy panel show Just a Minute from its second series in 1968 until his death 20 years later.