Giovanni di Paolo di Grazia (c. 1403–1482) is an Italian painter, working primarily in Siena.
He may have apprenticed with Taddeo di Bartolo, becoming a prolific painter and illustrator of manuscripts, including Dante's texts.
He is one of the most important painters of the fifteenth century Sienese School.
His early works show the influence of earlier Sienese masters, but his later style is more individual, characterized by cold, harsh colous and elongated forms.
His style also takes on the influence of International Gothic artists such as Gentile da Fabriano.
Many of his works have an unusual dreamlike atmosphere, such as the surrealistic Miracle of St. Nicholas of Tolentino, painted about 1455 and now housed in the Philadelphia Museum of Art, while his last works, particularly Last Judgment, Heaven, and Hell, from about 1465 and Assumption, painted in 1475, both at Pinacoteca Nazionale (Siena), are grotesque treatments of their lofty subjects.
Giovanni's reputation declines after his death but will be revived in the 20th century.