Alexander Tulloch Macqueen (born 16 May 1974) is an English actor. He has appeared on television, film and radio in the UK in productions such as Holby City, Hut 33, Peep Show, The Thick of It, Keeping Mum, and The Inbetweeners. He also voiced an incarnation of The Master in various Doctor Who audio plays for Big Finish, starting 2012. He also guest-starred in The Durrells in Series 4.
He is also known as Alex Macqueen.