Antonio della Chiesa (1394 – 22 January 1459) was an Italian Roman Catholic Dominican superior and the companion of Bernardino of Siena. He was born in 1394 as the son of the Marquis della Chiesa in San Germano. He was well-educated due to being a noble and demonstrated a keen taste for the religious life and devoted himself to the service of God; he grew up with the hopes of becoming a member of the clergy. His father opposed this desire, which later led to his son breaking off all links to his parents.