Judd Seymore Hirsch (born March 15, 1935) is an American actor known for playing Alex Rieger on the television comedy series Taxi (1978–1983), John Lacey on the NBC series Dear John (1988–1992), and Alan Eppes on the CBS series NUMB3RS (2005–2010). He is also well known for his career in theatre and for his roles in films such as Ordinary People (1980), Running on Empty (1988), Independence Day (1996), and A Beautiful Mind (2001).
He has twice won the Primetime Emmy Award for Outstanding Lead Actor in a Comedy Series, twice won the Tony Award for Best Actor in a Play, won the Golden Globe Award for Best Actor – Television Series Musical or Comedy and has been nominated for the Academy Award for Best Supporting Actor. He also starred as Arthur Przybyszewski in the CBS situation comedy Superior Donuts.
He is also known as Judd Seymore Hirsch.