Critchfield is a surname. Notable people with the surname include: Charles Critchfield (1910–1994), American mathematical physicist at the Los Alamos National Laboratory Jack Critchfield (born 1933), Florida Progress Corporation Chairman James H. Critchfield (1917–2003), American CIA officer Larry Critchfield (1908-1965), NFL player Richard Critchfield, American essayist and MacArthur fellow Russ Critchfield (born 1946), American former basketball player Phil Critchfield (born 1977), American SRE and Firebreather. See also Critchfield, Indiana, unincorporated community in White River Township, Johnson County, Indiana Jack Critchfield Park, stadium in Slippery Rock, Pennsylvania