Sub tuum præsidium (Ancient Greek: Ὑπὸ τὴν σὴν εὐσπλαγχνίαν; lit. 'under your protection') is an ancient Christian hymn and prayer dedicated to the Blessed Virgin Mary.
The hymn enumerates the three Marian truths: her special election by God the Father, the doctrine of perpetual virginity by the Holy Ghost, and her divine and sinless motherhood of God the Son. It is one of the oldest known Marian prayers and among the most ancient preserved hymns still currently in use.
The Papyrus No. 470, containing a substantial portion of the prayer was dated initially to the 3rd or 4th century; later dated as late as the 9th century A.D. The dating of the Papyrus remains uncertain.[1] Accordingly, the celebrated hymn is well attested within the Roman Catholic Church, the Eastern Orthodox Church and Oriental Orthodox Churches.