Oliver Platt (born January 12, 1960) is a Canadian-born American actor known for his extensive character actor roles on stage and screen. He has been nominated for five Primetime Emmy Awards, a Golden Globe Award, two Screen Actors Guild Awards, and a Tony Award.
Platt made his acting debut in the 1988 film Married to the Mob. He gained prominence for his roles in The Impostors (1998), Pieces of April (2003), The Ice Harvest (2005), Casanova (2005), Frost/Nixon (2008), and Please Give (2010). His other notable roles include Working Girl (1988), Flatliners (1990), Beethoven (1992), Indecent Proposal (1993), A Time to Kill (1996), Bulworth, Dr. Dolittle (both 1998), Ready To Rumble (2000), Kinsey (2004), 2012 (2009), Love & Other Drugs (2010), X-Men: First Class (2011), Ginger and Rosa (2013), and Rules Don't Apply (2016).
Platt is known for his recurring roles in television series such as The Big C, Fargo, and The Good Wife. He received Primetime Emmy Award nominations for his roles in The West Wing in 2001, Huff in 2005 and 2006, and Nip/Tuck in 2008. He portrayed George Steinbrenner in the series The Bronx Is Burning (2007). He is also known for his recurring role as Uncle Jimmy in the Hulu series The Bear (2022–present).