Saint Apollinaire, also known as Saint Apollinaris, was a Christian martyr and bishop of Ravenna in the 1st century. He is venerated as a saint in both the Roman Catholic and Eastern Orthodox Churches. His feast day is celebrated on July 20. According to tradition, Saint Apollinaire preached the Gospel in the region and faced persecution for his faith. He is often depicted in art with symbols of martyrdom, such as a palm branch. His legacy includes the Basilica di San Apollinare in Classe, a significant church dedicated to him in Ravenna.