Artemisia Lomi Gentileschi (US: JEN-til-ESK-ee, -⁠teel-, Italian: [arteˈmiːzja ˈlɔːmi dʒentiˈleski]; 8 July 1593 – c. 1656) was an Italian Baroque painter. Gentileschi is considered among the most accomplished 17th-century artists, initially working in the style of Caravaggio. She was producing professional work by the age of 15. In an era when women had few opportunities to pursue artistic training or work as professional artists, Gentileschi was the first woman to become a member of the Accademia di Arte del Disegno in Florence and she had an international clientele.

Many of Gentileschi's paintings feature women from myths, allegories, and the Bible, including victims, suicides, and warriors. Some of her best-known subjects are Susanna and the Elders (particularly 1610 version in Schloss Weißenstein, Pommersfelden), Judith Slaying Holofernes (her 1614–1620 version is in the Uffizi gallery), and Judith and Her Maidservant (her 1625 work is in the Detroit Institute of Arts).

Gentileschi was known for being able to depict the female figure with great naturalism and for her skill in handling colour to express dimension and drama.

Her achievements as an artist were long overshadowed by the story of Agostino Tassi raping her when she was around 18 and her being tortured to give evidence during his trial. For many years Gentileschi was regarded as a curiosity, but her life and art have been reexamined by scholars in the 20th and 21st centuries, with the recognition of her talents exemplified by major exhibitions at internationally esteemed fine art institutions, such as the National Gallery in London.