Jon Stewart (born Jonathan Stuart Leibowitz; November 28, 1962) is an American comedian, writer, producer, director, political commentator, actor, and television host. He is best known as the long-running host of The Daily Show on Comedy Central from 1999 to 2015, and he returned to the satirical news program in 2024. Stewart also hosted The Problem with Jon Stewart on Apple TV+ from 2021 to 2023.

Stewart has received numerous accolades, including 23 Primetime Emmy Awards, two Grammy Awards, and five Peabody Awards. In 2019, he was honored with the Bronze Medallion, and in 2022, he received the Mark Twain Prize for American Humor.

He began his career as a stand-up comedian and branched into television as the host of Short Attention Span Theater for Comedy Central. He went on to host You Wrote It, You Watch It (1992–1993) and The Jon Stewart Show (1993–1995) on MTV. Stewart has also appeared in films such as Big Daddy (1999) and Death to Smoochy (2002).

As the host of The Daily Show, he served as a writer and co-executive producer, during which the show gained significant popularity and critical acclaim, winning numerous Emmy Awards. Stewart hosted the 78th and 80th Academy Awards, co-authored the best-selling satirical books America (The Book): A Citizen's Guide to Democracy Inaction and Earth (The Book): A Visitor's Guide to the Human Race.

He was the executive producer of The Colbert Report (2005–2014), The Nightly Show with Larry Wilmore (2015–2016), and The Late Show with Stephen Colbert (2015–present). In 2024, he returned to The Daily Show for Monday episodes and as an executive producer.

Beyond entertainment, Stewart has been a vocal advocate for 9/11 first responders and war veterans' health benefits. In 2019, he received the New York City Bronze Medallion for his advocacy efforts in passing the permanent authorization of the September 11th Victim Compensation Fund Act. He also played a critical role in helping pass the Honoring our PACT Act of 2022.