Dame Lois Joan Muir is a New Zealand netball coach and administrator, and a former representative netball and basketball player. Muir represented New Zealand in two sports, playing with the Tall Ferns from 1952 to 1962 and the Silver Ferns, player #27, from 1960 to 1963. She later became head coach (#4) of the Silver Ferns for 15 years from 1974 to 1988.