Ewan Gordon McGregor, OBE (/ˌjuːən məˈɡrɛɡər/; born 31 March 1971) is a Scottish actor who has had success in mainstream, indie, and art house films. He is perhaps best known for his roles as heroin addict Mark Renton in the drama Trainspotting (1996), Jedi Obi-Wan Kenobi in the Star Wars prequel trilogy (1999–2005), poet Christian in the musical film Moulin Rouge! (2001), and Dr. Alfred Jones in romantic comedy-drama Salmon Fishing in the Yemen. He received Golden Globe nominations for Best Actor - Musical or Comedy for both Moulin Rouge and Salmon Fishing in the Yemen.

McGregor has also received critical acclaim for his starring roles in theatre productions of Guys and Dolls (2005–07) and Othello (2007–08). McGregor was ranked No. 36 on Empire magazine's "The Top 100 Movie Stars of All Time" list in 1997. In 2010 he won Best Actor for playing the title role in Roman Polanski's film The Ghost Writer at the 23rd European Film Awards. McGregor has a tenor singing voice.