Susan Elizabeth Garden, Baroness Garden of Frognal, PC (born Button, 22 February 1944) is a British Liberal Democrat politician who, since 2018, serves as Deputy Speaker of the House of Lords.

Educated at Westonbirt School and St Hilda's College, Oxford she became a teacher, becoming Hon FCIL in 2012.

Lady Garden stood as the Liberal Democrat parliamentary candidate for Finchley and Golders Green (London) in 2005.

[1] In September 2007 she was created a Life Peer as Baroness Garden of Frognal, of Hampstead in the London Borough of Camden.

Lord Garden died on 9 August 2007, by whom she has two daughters.