Edward Ian Macnaughton (30 December 1925 – 10 December 2002) was a Scottish actor-turned-television producer and director, best known for his work with the Monty Python team. MacNaughton was director and producer for all but four of the forty five episodes of Monty Python's Flying Circus from 1969 to 1974, director of the group's first feature film And Now for Something Completely Different in 1971 and director of their two German episodes, Monty Python's Fliegender Zirkus in 1971 and 1972. In 1973 the production team shared the BAFTA Award for Best Light Entertainment Programme for Monty Python's Flying Circus.
Ian MacNaughton was born in Glasgow and educated at Strathallan School in Perthshire. He studied medicine at university before abandoning his plans to become a doctor and joining the Royal Marines for a year in 1945. Whilst serving with the Royal Marines in an officers' training squad at Deal in Kent he was offered the chance to act with the Globe Players which was the Royal Marines amateur dramatics group. After he was demobilised in 1946 he returned to Glasgow where his father hoped he would join the family firm. However, he decided to apply for a one year pre-RADA course in London, which he completed, though he did not enter the Academy itself.