Dame Lois Joan Muir DNZM OBE (née Osborne; born 16 April 1935) 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 from 1960 to 1963. She later became head coach of the Silver Ferns for 15 years from 1974 to 1988. During this time she coached the Silver Ferns to World Championships gold in 1979 (jointly with Australia and Trinidad and Tobago) and in 1987.