Griffin Alexander Gluck (born August 24, 2000) is an American actor. On television, he is notable for his starring role as Charlie in Red Band Society and main role as Mason Warner on Private Practice and as Danny Gannon in Back in the Game. He also co-starred in both seasons of Netflix mockumentary series American Vandal. In film, he has portrayed Rafe Khatchadorian in the film Middle School: The Worst Years of My Life. Gluck recently played “Dunkleman” in Netflix original movie Tall Girl.

Gluck was born in Los Angeles. His father, Cellin Gluck, is a film director and producer, and his mother, Karin Beck, was a production assistant and line producer. Griffin's father was born in Wakayama Prefecture, Japan, to American parents, and was partly raised in Kobe, Japan.^[1][2][3][4] Griffin's paternal grandparents were Sumi (Hiramoto), who was of Japanese descent, and Jay Gluck, an archaeologist, historian, and Japanophile, who was of Jewish heritage.^[1][5]

Gluck started acting when he went with his older sister, Caroline, to a summer children's showcase of Guys and Dolls at the Palisades Playhouse.^[6] His first major role was as a three year old in a short film, Time Out, co-produced by his father and directed by Robbie Chafitz.

His big break came in 2011, when he played Michael in the film Just Go with It (starring Adam Sandler and Jennifer Aniston),^[7] for which he received a Young Artist Award nomination. He was later cast as Mason Warner on Private Practice, and was then upped to series regular on the show.^[8] After the series was cancelled, he joined a TV pilot called Back in the Game from 20th Century Fox TV.^[9] It was picked to series.^[10] The show was canceled in November 2013 ^[11]

In 2014, Gluck co-starred as Charlie on the Fox series Red Band Society, in which his character, who is in a coma, is the narrator of the show.^[12] In March 2015, he was cast in an NBC pilot, Cuckoo, which was not picked for series.^[13]

Gluck had his first film lead role playing Rafe Khatchadorian in the 2016 movie Middle School: The Worst Years of My Life, based on the hit novel by James Patterson.

Gluck was nominated for "Best Performance in a Feature Film - Supporting Young Actor" category at the 33rd Young Artist Awards.^[19]