Ian Stewart Butterworth (born 25 January 1964) is an English former professional footballer, formerly assistant and caretaker manager at Norwich City.

An attempt to resurrect his career at Norwich's non-league Norfolk neighbours King's Lynn failed and Ian moved to the US to play for the Colorado Rapids in the new MLS for 1996.

Butterworth continued his career in Sweden with IK Brage (11 apps, 0 goals) and in September 1997 he became player-manager but was soon on his way back to England when he joined Stafford Rangers as a player.

Bluebirds owner Sam Hammam said a change was needed to give manager Lennie Lawrence a "right-hand man who is a super coach, a bit of an animal".

He then worked for the Football Association, including a stint at the World Cup in Germany 2006 before joining Hartlepool as Reserve Team Manager in early July 2006.

In early October 2010, Butterworth was reported to have been interviewed for the vacant Lincoln City manager's position, available since Chris Sutton quit at the end of September 2010, but lost out.