James Louis McCartney is a British musician, songwriter and sculptor, living in London, England. He is the son of Paul McCartney and his first wife, rock photographer and animal rights activist Linda McCartney.

McCartney is most notable in the music business for playing guitar and drums as well as co-writing a few songs on some of his father's solo albums, including Flaming Pie (1997) and Driving Rain (2001). On Flaming Pie, he has an electric guitar solo on the track "Heaven on a Sunday." On Driving Rain, he co-wrote the songs "Spinning On An Axis" and "Back In The Sunshine Again" with his father, and played percussion on the former track and guitar on the latter. He also plays lead guitar on his mother's posthumously released solo album, Wide Prairie.

In 2005, he was spotted accompanying his father during his American tour.

On November 14, 2009, McCartney made his U.S. debut performing at the Fairfield Arts & Convention Center, during the Fourth Annual David Lynch Weekend for World Peace and Meditation in Fairfield, Iowa.