A self-portrait is a representation of an artist, drawn, painted, photographed, or sculpted by the artist. Although self-portraits have been made by artists since the earliest times, it is not until the Early Renaissance in the mid 15th century that artists can be frequently identified depicting themselves as either the main subject, or as important characters in their work. With better and cheaper mirrors, and the advent of the panel portrait, many painters, sculptors and printmakers tried some form of self-portraiture. Portrait of a Man in a Turban by Jan van Eyck of 1433 may well be the earliest known panel self-portrait. He painted a separate portrait of his wife, and he belonged to the social group that had begun to commission portraits, already more common among wealthy Netherlanders than south of the Alps. The genre is venerable, but not until the Renaissance, with increased wealth and interest in the individual as a subject, did it become truly popular.

A self-portrait may be a portrait of the artist, or a portrait included in a larger work, including a group portrait. Many painters are said to have included depictions of specific individuals, including themselves, in painting figures in religious or other types of composition. Such paintings were not intended publicly to depict the actual persons as themselves, but the facts would have been known at the time to artist and patron, creating a talking point as well as a public test of the artist's skill.