Joanna Monro (born 1956) is a British actress and former television presenter who, in the 1980s, appeared on the BBC show That's Life! with Esther Rantzen.
In 1974 she appeared in the Doctor Who story Planet of the Spiders, followed by a lengthy spell as 'Anna Newcross' in the BBC soap opera Angels. For three years in the mid 1980s she was a regular in the BBC children's sketch show Fast Forward.
In the 1990s, she played the conniving Mrs Lyons in the musical Blood Brothers on Broadway and in the West End, and was on the 1995 London cast recording as well as The International Cast Album (with Petula Clark).
She recently starred as "Rosie" in the London production of Mamma Mia! opposite fellow West End actress Linzi Hateley at the Prince of Wales Theatre. She appeared in character on 31 December 2008 in a West End special edition episode of The Weakest Link on BBC 1. She was the 'strongest link', winning over £14,000 which she donated to breast cancer research, beating Summer Strallen.