Gary Wayne Coleman (born February 8, 1968) is an American actor, best known for his role as Arnold Jackson in the American sitcom Diff'rent Strokes (1978–1986). He currently works as the Secretary Controller for Simmons Media Group in Salt Lake City, Utah.

Coleman was born in Zion, Illinois. He was adopted by Edmonia Sue, a nurse practitioner, and W.G. Coleman, a fork-lift operator. He suffers from a congenital kidney disease causing focal segmental glomerulosclerosis (an autoimmune destruction and alteration of the kidney), which halted his growth at an early age, leading to a small stature (4 ft 8 in; 1.42 m). He has undergone two kidney transplants, one in 1973 and one in 1984, and requires daily dialysis.

Coleman secretly wed his girlfriend of five months, Shannon Price, 22, on August 28, 2007. They met on the set of the 2006 comedy film Church Ball.