Ruth Dunning (17 May 1911, in Prestatyn – 27 February 1983, in London) was a Welsh actress of stage, television, and film. She first came to prominence in the role of Gladys Grove in BBC Television's The Grove Family (1954–1957), also portraying that character in the 1955 film It's a Great Day. In 1962 she was awarded the British Academy Television Award for Best Actress for her work on Armchair Theatre.
Some of her other notable work includes Leonie in Intimate Relations (1953), Auntie B. in Urge to Kill (1960), Mrs. Mitchell in Hoffman (1970), Betty Atherton in The Sextet (1972), Agnes Henderson in The House in Nightmare Park (1973), Miss Minchin in A Little Princess (1973), Mildred Finch in An Unofficial Rose (1974–1975), Lesley Whittle's mother in The Black Panther (1977), and Mrs. Crabtree in Children of the Stones (1977).
- Save a Little Sunshine (1938) - Miss Dickson
- The Woman in the Hall (1947) - Shirley Dennison
- Intimate Relations (1953) - Leonie
- The Weak and the Wicked (1954) - Prison Matron
- Man of the Moment (1955) - Gladys Grove (uncredited)
- It's a Great Day (1955) - Gladys Grove
- Urge to Kill (1960) - Auntie B
- And Women Shall Weep (1960) - Mrs. Lumsden
- Dangerous Afternoon (1961) - Miss Letty Frost
- The Three Lives of Thomasina (1963) - Mother Stirling
- Hoffman (1970) - Mrs. Mitchell
- The House in Nightmare Park (1973) - Agnes Henderson
- The Black Panther (1977) - Lesley's Mother