Apollinaris Sidonius (Caius Sollius Apollinaris Sidonius) (əpŏlĬnâr´Ĭs sīdō´nēəs, sĬdō´–), fl. 455–75, Latin writer, b. Lyons. He had a minor role in imperial politics and was bishop of Clermont. Although his panegyric poetry is of little consequence, his letters are an interesting historical source. Canonized by the Roman Catholic Church, he is called St. Sidonius.

Apollinaris Sidonius: see Apollinaris Sidonius.