Jonathan Seda (born October 14, 1970) is an American actor. Seda was an amateur boxer who auditioned for and was given a role in the 1992 boxing film Gladiator. He played the role of Chris Pérez alongside Jennifer Lopez in the movie Selena and Detective Antonio Dawson in NBC's Chicago PD. He also played the role of Paul Falsone in the show Homicide: Life on the Street. He also played the role of U.S. Marine John Basilone, recipient of the Medal of Honor, in Tom Hanks and Steven Spielberg's follow up to Band of Brothers, The Pacific.
Seda was born in Manhattan to parents of Puerto Rican descent and raised in Clifton, New Jersey. After graduating from Clifton High School, Seda was convinced by two friends that he should take up boxing, so he began working out in a gym.
He boxed in several gyms in New Jersey and soon was a runner up in the New Jersey Golden Gloves competition. As an amateur boxer, Seda had a record of 21 wins and one loss.