Frederick Alexander Macquisten KC (23 July 1870 in Inverkip, Scotland – 29 February 1940 in Walton-on-Thames, England) was a British lawyer and politician. He was the son of Reverend Dr. Alexander Macquisten, the minister of Inverkip Parish Church.
Educated by his father, from whom he acquired an intimate knowledge of the Bible, he attended University of Glasgow and went on to practice as a solicitor. At the same time, he was elected a member of Glasgow Corporation. In 1909, he qualified as a member of the Faculty of Advocates in Scotland and ten years later was called to the Bar by Gray's Inn. He was made a King's Counsel (KC) in Scotland in 1919, and took silk at the English Bar in 1932.
Macquisten unsuccessfully contested the Leith Burghs parliamentary constituency in 1910, and then Glasgow St. Rollox in 1912 as a Unionist. In 1918, he was elected as the Conservative party Member of Parliament (MP) for Glasgow Springburn.
In 1921 he put forward a proposal to criminalize lesbianism which was rejected by the House of Lords; during the debate, Lord Birkenhead, the then Lord Chancellor argued that 999 women out of a thousand had "never even heard a whisper of these practices."