Fortitude is a painting by the Italian Renaissance master Sandro Botticelli, finished in 1470. Housed in the Galleria degli Uffizi, in Florence, Italy, Fortitude was the first recorded masterpiece by Botticelli.

Alessandro di Mariano di Vanni Filipepi, better known as Sandro Botticelli or simply Botticelli, was an Italian painter of the Early Renaissance. Botticelli's posthumous reputation suffered until the late 19th century, when he was rediscovered by the Pre-Raphaelites who stimulated a reappraisal of his work. Since then, his paintings have been seen to represent the linear grace of late Italian Gothic and some Early Renaissance painting, even though they date from the latter half of the Italian Renaissance period.