Mary Foley-Berkeley, 17th Baroness Berkeley

Mary Lalle Foley-Berkeley, 17th Baroness Berkeley (9 October 1905 – 17 October 1992) was a British politician and peeress.

She was born in Chertsey, Surrey, United Kingdom on 9 October 1905. Daughter of Lt-Col. Frank Wigram Foley and Eva Mary FitzHardinge Milman, 16th Baroness Berkeley.

Born as Mary Lalle Foley, she changed her name legally to Hon. Mary Lalle Foley-Berkeley in 1951.

She was an active member of the House of Lords and participated in several debates from 1970 to 1977.

She succeeded to the title of 17th Baroness Berkeley on 5 April 1967 when the abeyance of the barony was terminated in her favour. She died unmarried at the age of 87, after which her title passed to her nephew Anthony Gueterbock.

• 9 October 1905 – 12 September 1951: The Honourable Mary Lalle Foley
• 12 September 1951 – 5 April 1967: The Honourable Mary Lalle Foley-Berkeley
• 5 April 1967 – 17 October 1992: The Right Honourable The Baroness Berkeley