Saturday Night Live returns with a new episode tonight featuring first-time host , actor Josh O'Connor and returning musical guest Lily Allen .

O'Connor, who has appeared in four films in 2025, joins a December lineup that began with Melissa McCarthy's December 6 hosting gig and will conclude with Ariana Grande 's December 20 episode.

Who Is Hosting Tonight?

Josh O'Connor makes his SNL hosting debut. The British actor has starred in four films in 2025: Rebuilding , The History of Sound , The Mastermind , and Netflix's Wake Up Dead Man: A Knives Out Mystery . His SNL connections run deep—he worked alongside Season 50 host Paul Mescal in The History of Sound , and the cast of Wake Up Dead Man includes five previous SNL hosts: Josh Brolin, Daniel Craig, Glenn Close,

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