Josephine "Jo" Jones is a fictional character played by Katy Manning in the long-running British science fiction television series Doctor Who. Jo was introduced by Barry Letts and Terrance Dicks in the first episode of Doctor Who's eighth season (1971) as a new companion of series protagonist the Doctor, in his third incarnation (Jon Pertwee). After the Doctor's previous companion Liz Shaw (Caroline John), a scientist and intellectual, the production team looked to introduce a less experienced companion to act as an audience surrogate. Jo appeared in 15 stories (77 episodes).
