Thomas Anthony Hollander (/ˈhɒləndər/; born 25 August 1967 is an English actor. As a child Hollander trained with the National Youth Theatre and was later involved in stage productions as a member of the Footlights and was president of the Marlowe Society. He later gained success for his roles on stage and screen, winning a BAFTA Award and a Screen Actors Guild Award, as well as nominations for a Tony Award and Olivier Award.

He began his career in theatre, winning the Ian Charleson Award in 1992 for his performance as Witwoud in The Way of the World at the Lyric Hammersmith Theatre. He made his Broadway debut in David Hare's The Judas Kiss in 1998. He appeared as Henry Carr in a revival of Tom Stoppard's play Travesties, earning nominations for the Olivier Award for Best Actor and Tony Award for Best Actor in a Play.

Hollander gained attention for portraying Mr. Collins in Joe Wright's Pride & Prejudice (2005) and as Lord Cutler Beckett in the Pirates of the Caribbean franchise. Other film roles include in Gosford Park (2001), Elizabeth: The Golden Age (2007), Valkyrie (2008), In the Loop (2009), Hanna (2011), About Time (2013), The Invisible Woman (2013), Mission: Impossible – Rogue Nation (2015), and Bohemian Rhapsody (2018).

He's also known for his television roles including as the lead role in the BBC sitcom Rev. (2010–2014) which he co-wrote for which he received the BAFTA Award for best sitcom in 2011. For his role in the BBC series The Night Manager he won the BAFTA Award for Best Supporting Actor. He portrayed King George V in BBC's The Lost Prince (2001), and King George III in HBO miniseries John Adams (2008) and also starred in ITV's Doctor Thorne, and HBO's The White Lotus (2022). He voices Alfred Pennyworth in the animated series Harley Quinn (2020–present).