Judaism
Viewed as a Latter Prophet whose book contains a vital theological message about repentance, divine forgiveness, and the scope of God's mercy.
Christianity
Seen as a prophet of the Old Testament. His three days inside the belly of the fish are historically viewed in Christian theology as a prophetic prefiguring (or "sign") of Jesus Christ's burial and resurrection.
Islam
Revered as a major prophet of Allah. The Quran features his story of repentance, and he is honored for successfully preaching to the people of Nineveh.