James H. Harrington III (born November 15, 1971) professionally known as Jay Harrington is an American actor who is the best known for his role as Officer David (Deacon) Kay in the reboot series S.W.A.T. in 2017.
Harrington was born and raised in Wellesley, Massachusetts to Judy and Terry Harrington. He has two brothers, actor Adam and Matt. As a child, his family spent summers on Cape Cod up the road from The Harwich Junior Theater. He attended Wellesley High School and then studied theater at Syracuse University.
Harrington has been featured as Dr. Simon O'Keefe on the WB drama Summerland, FBI Special Agent Paul Ryan on FOX's short-lived The Inside, and Steve on NBC's version of Coupling. He appeared in a recurring role on the police drama series The Division. He has also had roles on A.U.S.A., The Shield, Time of Your Life, Private Practice, and Burn Notice.
In 2006, Harrington began appearing as Dr. Ron McCready on the series Desperate Housewives. He starred as Ted Crisp in the comedy series Better Off Ted from March 2009 to January 2010. He had a recurring role in Season 4 of the TV Land comedy series Hot in Cleveland. In 2014, he co-starred on the short-lived USA Network comedy series Benched. In 2017, he had a guest role on Suits as Mark Meadows, Donna's ex-boyfriend.
Harrington has appeared in films such as American Reunion (with his character again - like in Desperate Housewives - being called "Dr. Ron"), Whatever It Takes, Anywhere but Here, Catalina Trust, A Little Inside, and Partner(s). He has also performed on stage, starring as Jack in Boy's Life and appearing in the off-Broadway productions Barefoot in the Park and Tony and Tina's Wedding, Harrington is an avid sports fan who plays in the Entertainment League, a private celebrity basketball league (formerly the NBA-E League), and skates for a local amateur ice hockey team.
He is close friends with Cedric Yarbrough and actor Taye Diggs, with whom he graduated from Syracuse. He is currently married to Monica Richard a TV host since August 2016.