Joseph Gatt (born 3 December 1971)^[1][2] is an English actor. He is best known for his roles in the films Thor (2011), Star Trek Into Darkness (2013), and Dumbo (2019).

Gatt was born in the Notting Hill area of London on 3 December 1971, the son of Maltese immigrant parents; his father is from Paola and his mother is from Lija. While growing up, he spent summers with his family in Malta.^[3] He was diagnosed with alopecia universalis at the age of 12.^[3][4] He trained as an actor at the Sylvia Young Theatre School before joining the Mountview Academy of Theatre Arts, where he graduated with a bachelor's degree.^[5]

After graduating from drama school, Gatt's first film role was in Orpheus & Eurydice (2000), playing opposite Oliver Reed in one of Reed's last films. He has performed in many musicals in London's West End and in national tours.

Gatt lives in Los Angeles with Mercy Malick, his girlfriend, since around 2009.^[3]

In February 2024, the Los Angeles Deputy District Attorney dismissed all charges against Gatt^[6][7] stemming from an arrest in April 2022 for allegedly having sexually explicit chats with a minor online.^[8]