Jon Polito (born December 29 1950) is an American actor, known for working with the Coen Brothers. He also appeared in the first two seasons of Homicide: Life on the Street and on the first season of Crime Story. Polito won the Maverick Spirit Event Award at Cinequest Film Festival in 2005.

A heavy set, bald character player who often sports a distinctive, pencil-thin moustache and is frequently cast as gangsters or cops, Polito appeared on Broadway in "American Buffalo" (1977), "Curse of the Aching Heart" (1982) and the 1984 revival of "Death of a Salesman" (which was broadcast on CBS in 1985) and starred in the original Hartford Stage Company production of "Other People's Money". He made his film debut in Clairvoyant, The (1982) and played Tommy Lucchese in the TV series "Gangster Chronicles, The" (1981). Polito is best known for his roles in two films by the Coen Brothers: as obsequious yet vicious crime lord Johnny Caspar in Miller's Crossing (1990) and as the toadying Lou Breeze in Barton Fink (1991).

A veteran of over 100 films, Jon Polito is most recognized for his work with The Coen brothers, as well as his many television appearances as a series regular and guest star. Notable Motion Picture roles are in Millers Crossing, Barton Fink, The Man Who Wasn't There, The Crow, Blankman, and The Freshman with Marlon Brando. On Television he starred as a series regular on Crime Story, Ohara, Hearts are Wild, The Chronical, and the critically acclaimed Homicide, Life on the Street. Notable guest star roles include the befuddled landlord Sylvio on Seinfeld, and his only role as a woman, Rhonda, on The Chris Isaak Show. He starred on Broadway with Faye Dunaway in The Curse Of An Aching Heart and with Dustin Hoffman in the 1985 Tony award winning revival of Death Of A Salesman, which he also filmed for CBS. He received the Best Actor OBIE award for Off Broadway theater in 1980. Other awards include the 2001 TELLY for animation voice over in The Dancing Pumpkin which was directed by his brother Jack Polito, The New York Independent Festival Award for Excellence in Acting, and the 2005 Cinequest Maverick Award for his body of work in Film and Television. He credits his success to three people, his mentor Dominic Garvey, his only acting teacher Irene Baird, and a great director and friend, Paul Bettis.