Charlie McMahon (born Horace Charles McMahon in the Blue Mountains outside Sydney, Australia, June 19, 1951) is an Australian didgeridoo player. The founder of the group Gondwana, McMahon was one of the first non-Aboriginal musicians to gain fame as a professional player of the instrument.

He is also the inventor of the didjeribone, a sliding didgeridoo made from two lengths of plastic tubing and played somewhat in the manner of a trombone (hence its name).