MacPaint is a raster graphics editor developed by Apple Computer and released with the original Macintosh personal computer on January 24, 1984. It was sold separately for US$195 with its word processor counterpart, MacWrite. MacPaint was notable because it could generate graphics that could be used by other applications. Using the mouse, and the clipboard and QuickDraw picture language, pictures could be cut from MacPaint and pasted into MacWrite documents. Pictures could also be cut from MacPaint and pasted into the resource fork of any application via ResEdit, allowing application internationalization.

The original MacPaint was developed by Bill Atkinson, a member of Apple's original Macintosh development team. Early development versions of MacPaint were called MacSketch, still retaining part of the name of its roots, LisaSketch. It was later developed by Claris, the software subsidiary of Apple which was formed in 1987. The last version of MacPaint was version 2.0, released in 1988. It was discontinued by Claris in 1998 because of diminishing sales.

MacPaint was first advertised in an 18-page brochure in December 1983, following the earlier announcement of the Macintosh 128K. The Macintosh was released on January 24, 1984 with two applications, MacPaint and MacWrite. For a special post-election edition of Newsweek in November 1984, Apple spent more than US$2.5 million to buy all 39 of the advertising pages in the issue. The Newsweek advertisement included many pages dedicated to explaining how MacWrite and MacPaint worked together. After launch, a New York Times reviewer noted how MacPaint unfolded numerous graphic possibilities for the personal computer; he went further to say "it is better than anything else of its kind offered on personal computers by a factor of 10."