Jon of 'Chicago P.D.' is Jonathan Seda, an American actor who has been in the entertainment industry since the early 1990s. He is best known for his role as Detective Antonio Dawson in the NBC drama series 'Chicago P.D.' from 2014 to 2020. Seda has also appeared in films such as 'Selena' (1997), 'The Pacific' (2010), and '12 Strong' (2018). He has won several awards for his work, including a Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series for 'Chicago P.D.' in 2015.