Jonathan Seda is an American actor of Puerto Rican descent, best known for his role as Detective Antonio Dawson in NBC's Chicago P.D., and as Detective Paul Falsone on NBC's: Homicide: Life on the Street. The character of Antonio Dawson on Chicago PD is sibling to the character of Gabriela Dawson on Chicago Fire. Seda was an amateur boxer who in 1992, auditioned for and was given a role in the film Gladiator. He became interested in acting and appeared in various films. He portrayed Chris Pérez alongside Jennifer Lopez in Selena and became widely known to both the Hispanic and non-Hispanic communities.

He has had numerous television appearances, including roles as legendary Marine John Basilone in Tom Hanks and Steven Spielberg's follow up to Band of Brothers, The Pacific.