McCartney III is the 18th solo album by English musician Paul McCartney, released on 18 December 2020 by Capitol Records. It serves as a continuation to his solo albums McCartney (1970) and McCartney II (1980). Similar to those albums, McCartney III features McCartney on most instruments.

McCartney III became McCartney's first UK number-one solo album since Flowers in the Dirt in 1989, and debuted at number two on the US Billboard 200 albums chart. At the 64th Annual Grammy Awards, it was nominated for "Best Rock Album" and "Best Rock Song" (for "Find My Way"). In 2022, the album was packaged with McCartney and McCartney II as part of the McCartney I II III box set.