John Charles "J.C." MacKenzie (born 17 October 1970, height 6' 1" (1,85 m)) is a Canadian actor. He is known for his roles as Arnold Spivak in Steven Bochco's ABC television series Murder One (1995–1997), Reagan "Normal" Ronald in James Cameron's Dark Angel television series (FOX from 2000—2002) and Ludlow in Martin Scorsese's The Aviator (2004).

• The Irishman (2019)

  
• Mad Money (2008)

  
• My One and Only (2009)

  
• Vinyl (2016)

  
• Dark Angel (2000)