Thomas William Hiddleston (born 9 February 1981) is an English actor. He gained international fame portraying Loki in the Marvel Cinematic Universe (MCU), beginning with Thor in 2011 and including the Disney+ series Loki (2021–2023).

Hiddleston started his film career with Joanna Hogg's films Unrelated (2007) and Archipelago (2010). In 2011, Hiddleston portrayed F. Scott Fitzgerald in Woody Allen's romantic comedy Midnight in Paris and appeared in Steven Spielberg's War Horse. That year, he was nominated for the BAFTA Rising Star Award. He continued working with auteurs in independent films, including Terence Davies' drama The Deep Blue Sea (2012), Jim Jarmusch's vampire film Only Lovers Left Alive (2013) and Guillermo del Toro's horror film Crimson Peak (2015). He also played the troubled country music singer Hank Williams in the biopic I Saw The Light (2015) and led the big-budget adventure film Kong: Skull Island (2017). On television, Hiddleston starred in and executive produced the limited series The Night Manager (2016), for which he received two Primetime Emmy Award nominations and won a Golden Globe Award for Best Actor.

Hiddleston made his stage debut in Journey's End in 1999. He continued acting in theatre, including in the West End productions of Cymbeline (2007) and Ivanov (2008). He won the Laurence Olivier Award for Best Newcomer in a Play for his role in Cymbeline and was nominated for the same award as Cassio in Othello (2008). Hiddleston starred as the title character in a production of Coriolanus (2013–2014), receiving a nomination for the Laurence Olivier Award for Best Actor. He made his Broadway debut in a 2019 revival of Harold Pinter's drama Betrayal, for which he was nominated for the Tony Award for Best Actor in a Play.