Olek Krupa (born Aleksander Krupa; 18 March 1947), is a Polish-American actor, active in film and television roles and best known for playing villains and/or criminals such as Russian President Matveyev in Salt, Mashkov in The Italian Job, Bosnian Serb General Miroslav Lokar in Behind Enemy Lines.

He has also guest-starred on television series such as Miami Vice, New York Undercover, Law & Order, Law & Order: Special Victims Unit, Law & Order: Criminal Intent, Blue Bloods, Person of Interest, and The Blacklist, and had a recurring role in the FX period drama series, The Americans.