Nathan Joseph Fielder (born May 12, 1983) is a Canadian comedian, actor, writer, director, producer, and entrepreneur. He is best known for co-creating, directing, and starring in the Comedy Central parody reality show Nathan for You (2013–2017) and the HBO docu-comedy The Rehearsal (2022–present), and executive producing How To with John Wilson (2020–present). Fielder was named one of the 100 most influential people in the world by Time magazine in 2023.

Early life
Nathan Joseph Fielder was born into a Jewish family in Vancouver on May 12, 1983, the son of social workers Deb and Eric Fielder. He attended Point Grey Secondary School, where he was a member of the school's improv comedy group, which also included comedian Seth Rogen. He worked as a magician during his teenage years and is a member of The Magic Castle. He studied business at the University of Victoria, where he graduated with a BComm in 2005. After university, he moved to Toronto and enrolled in Humber College's Comedy Program in 2006. He worked briefly for a brokerage firm before quitting to start his comedy career.