Roy Richard Scheider (/ˈʃaɪdər/; November 10, 1932 – February 10, 2008) was an American actor and amateur boxer who achieved fame with his leading and supporting roles in celebrated films from the 1970s to the mid-1980s. He was nominated for two Academy Awards, one Golden Globe, and one BAFTA. Scheider's best-known roles include Frank Ligourin in Klute (1971), Police Chief Martin Brody in Jaws (1975) and its 1978 sequel, "Cloudy" Russo in The French Connection (1971), "Buddy" in The Seven-Ups (1973), Doc Levy in Marathon Man (1976), Scanlon / Dominguez in Sorcerer (1977), Joe Gideon in All That Jazz (1979), Frank Murphy in Blue Thunder (1983), and Dr. Heywood Floyd in the 2001: A Space Odyssey sequel, 2010: The Year We Make Contact (1984). Subsequent credits included Naked Lunch (1991), Romeo Is Bleeding (1993), The Myth of Fingerprints (1997), The Rainmaker (1997), and The Punisher (2004). He portrayed Captain Nathan Bridger on NBC's seaQuest DSV from 1993–1996.

Filmography