Muddle may refer to:

Mr. Muddle, one of the Mr. Men from the children's book series by Roger Hargreaves MDL (programming language), the Lisp-derived language that Zork was first written in MUDDL, a programming language originally created for the first Multi-User Dungeon (MUD) by Richard Bartle and Roy Trubshaw Mudlle, a programming language originally created for the MUD MUME by David Gay and Gustav Hållberg Muddle (cricketer), an English cricketer for Kent, active 1768

See also Muddler, a bartender's tool Muddle Earth, a children's book by Paul Stewart Muddle Earth (John Brunner) Muddling spoon