Catherine Ann "Katy" Manning (born 14 October 1946) is a British actress. Although she has made many appearances on both screen and stage, Manning is best known for her part as the companion Jo Grant in the BBC science fiction television series Doctor Who. Manning initially played the role regularly from 1971 to 1973 but also reprised the role in the Doctor Who spin-off The 'Sarah Jane Adventures' in 2010, and 'Power Of The Doctor' in 2022. She is also well known for voicing Iris Wildthyme in the audio series 'Iris Wildthyme' for Big Finish Productions since 2005.