|Date of birth||October 14, 1970|
|Birth place||New York City, New York, USA|
|Years active||1992 to present|
|Seasons||2 & 3|
|First episode||"Accentuate the Positive"|
|Last episode||"Do Watcha Wanna"|
|Credits||11 episodes (see below)|
Seda's parents moved from Puerto Rico to Manhattan, New York, where he was born. They moved to a neighborhood in Clifton, New Jersey shortly after his birth. There, he received his primary and secondary education; after graduating from high school, Seda started to work out in a gym after two friends convinced him that he should take up boxing. 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.
Seda's film debut was in 1992, in the boxing film Gladiator in which he played the role of "Romano," a Cuban pugilist. He has since worked in various films and TV series. He portrayed Chris Pérez, alongside Jennifer Lopez, in Selena'.
In 1995, Seda was nominated Best Male Lead at the Spirit Awards for his role the 1994 movie I Like It Like That opposite Rita Moreno and Lauren Vélez. In 1996, he was nominated Best Actor at the Cannes Film Festival for his role as "Blue" in the film The Sunchaser opposite actor Woody Harrelson.
Seda became widely known to the Hispanic film audience when he portrayed Chris Pérez alongside Jennifer Lopez in Selena, a 1997 film based on the true story of the Tejano singer, Selena, who was murdered on her way to mainstream stardom. Seda portrayed her husband.
Also in 1997, Seda landed the role of Detective Paul Falsone on NBC's Homicide: Life on the Street. The writers took advantage of his boxing background, writing a shirtless practice bout into an episode which established his character's attractiveness to fellow detective Laura Ballard. He also boxed opposite Jimmy Smits in the 2000 movie, Price of Glory.
His first leading role on the large screen was as the protagonist in 2002's King Rikki, a re-imagining of Shakespeare's Richard III in East L.A.. Seda has appeared in over two dozen movies, including Bad Boys II (2003) as "Roberto."
He has had numerous television appearances. Aside from his well-known Homicide role, among the most notable have been as Dino Ortolani in Oz, Matty Caffey in Third Watch, Paul Falsone in a Homicide crossover with Law & Order, House, The Closer, and CSI: Miami.
He is featured as one of the three leads in the HBO World War II mini-series The Pacific released on March 14, 2010, playing the part of Marine John Basilone. He was also part of the cast of the CBS show Close to Home.
It was announced in June 2010 that Seda will appear as a guest star in an episode of Burn Notice. He played Cole in "Center of the Storm".
He joined the starring cast of Treme playing Nelson Hidalgo in the second season. His character is a politically connected land developer from Dallas who helps out with the relief efforts in post-Katrina New Orleans.
He appeared in the 2011 film Larry Crowne, which starred, and was co-written and directed by, Tom Hanks. Hanks served as an executive producer on The Pacific.
Seda established "The Jon Seda Foundation" to fund the research into the causes and cures of Reflex sympathetic dystrophy syndrome (RSDS) after his sister, Sofia, was diagnosed with the disorder. Seda lives in Los Angeles, California with his wife and their three children.