Nicky Katt (born May 11, 1971) is an American actor. Katt often plays unsympathetic characters, such as a murderous cop on the take in Monk, an irascible motorhead in Dazed and Confused, an ill-fated white supremacist child rapist in A Time to Kill , and an embittered business rival in Boiler Room.

Career
Katt is known for his role as unorthodox teacher Harry Senate on David E. Kelley's Fox drama series Boston Public. Katt's film roles include Clint Bruno in Dazed and Confused (1993), Billy Ray Cobb in A Time to Kill (1996), Tim in SubUrbia (1996), Stacy the hitman in The Limey (1999), Greg Weinstein in Boiler Room (2000), Adolf Hitler in Full Frontal (2002), Fred Duggar in Insomnia (2002), Stuka in Sin City (2005), and Nate Petite in Snow Angels (2008).

Katt has co-starred in many movies and received critical praise for performances in The Limey and SubUrbia. He was originally cast to star in the ABC spring 2006 replacement series The Evidence, but was replaced by Rob Estes. Katt was a child actor as well, appearing as Marc Singer's son on the television series V. He also lent his voice in gaming as the voice of Atton Rand in Star Wars Knights of the Old Republic II: The Sith Lords.