Leopold Abse (22 April 1917 – 19 August 2008) was a Welsh lawyer and politician. He was a Welsh Labour MP for nearly 30 years, noted for promoting private member's bills to decriminalise male homosexual relations and liberalise the divorce laws. During his parliamentary career, Abse introduced more private member's bills than any other parliamentarian in the 20th century. After his retirement from Parliament he wrote several books about politics, based on his interest in psychoanalysis.