Cástulo Guerra (born August 24, 1945) is an Argentine actor who found success appearing in American films and television. Film roles include: Terminator 2: Judgment Day, Cold Heaven, The Usual Suspects, Meet Me in Miami, Where the River Runs Black, The Mexican, The Celestine Prophecy, and Beverly Hills Chihuahua 2. His TV credits include: Riptide, The Fall Guy, Falcon Crest, The A-Team, Remington Steele, L.A. Law, Star Trek: The Next Generation, 21 Jump Street, Lois and Clark: The New Adventures of Superman, Brimstone, Nash Bridges, The Agency, ER, Alias, CSI: Miami, The West Wing, Prison Break and NUMB3RS. He is also Alexei Stukov in StarCraft and Raphael Castillo in Santa Barbara.
Guerra was born in Córdoba, Argentina, the son of Maria (née Sola) and Castulo Guerra, who was a politician and writer.