The Arco di San Felice is a Roman triumphal arch located in the city of Atri, in the Abruzzo region of Italy. The arch dates back to the 2nd century AD and was built in honor of the emperor Hadrian, who visited Atri during his travels through the empire.

The arch is made of local limestone and stands about 8 meters tall, with three archways and decorative reliefs on its façade. The central archway is larger than the two side arches, and is decorated with a relief of the goddess Roma, the personification of the city of Rome, standing between two soldiers. The side arches are decorated with reliefs of soldiers and other military imagery.

The arch was originally located at the entrance to the ancient Roman city of Atri, and served as a gateway for travelers and visitors to the city. Today, it remains a popular tourist attraction and is considered one of the best-preserved examples of Roman architecture in the Abruzzo region.