Glenn Franklin Howerton III, born on April 13, 1976, in Okinawa, Japan, is an American actor, producer, and writer best known for his role as Dennis Reynolds on the long-running sitcom It's Always Sunny in Philadelphia (2005–present), which he co-developed and for which he serves as an executive producer and writer

. He has also appeared in notable television roles such as Cliff Gilbert on The Mindy Project , Don Chumph on FX's Fargo , and Jack Griffin on NBC's A.P. Bio

. Howerton grew up in various places including London, South Korea, and Alabama, as his father was a fighter pilot

. He graduated from the Juilliard School with a Bachelor of Fine Arts in acting

. His early career included guest roles on ER and a lead role on the short- lived That '80s Show (2002)

. In addition to his television work, Howerton has appeared in films such as BlackBerry (2023), where he portrayed Jim Balsillie, and other movies including Crank and The Strangers

. He has also co-hosted The Always Sunny Podcast with his co-creators from 2021 to 2023

. Howerton is married to Jill Latiano since 2009 and has two children

. He remains active in acting and production, continuing to contribute significantly to comedy television