Celidonius is the traditional name ascribed to the man born blind whom Jesus healed in the Gospel of John 9:1–38. This tradition is attested in both Eastern Christianity and in Catholicism.

One tradition ascribes to St. Celidonius the founding of the Christian church at Nîmes in Gaul (present-day France). For this reason, he is often confused with Sidonius of Aix.

Saint Demetrius of Rostov, in his Great Synaxarion, also mentions that the blind man's name was Celidonius.^[1]

In the Eastern Orthodox Church, the account of the healing of Celidonius is recounted on the "Sunday of the Blind Man", the Sixth Sunday of Pascha (Easter).^[2] Many hymns concerning the healing and its significance are found in the Pentecostarion, a liturgical book used during the Paschal season.

• List of names for the Biblical nameless