Shelby Chong, née Fiddis, (born 1 February 1948), is a comedian, American motion picture producer and actress. She was the executive producer of 2003's Best Buds and associate producer of Cheech & Chong's The Corsican Brothers (1984), Still Smokin' (1983), Things Are Tough All Over (1982), and Nice Dreams (1981). Her notable acting roles include "Nancy Reynolds" in 1993's Sandman.
Chong is the wife of actor and comedian Tommy Chong. She performed as Tommy's opening act at his comedy shows from 1996–2000, when she became his comedy partner. Since Cheech and Chong's reunion in 2008, Shelby has been performing as their opening act at sold-out comedy shows across the country.