Saint Barnabas ⓘ (fl. 1st century), originally named Joseph and a native of Cyprus, was an early Christian missionary and a leading figure in the Jerusalem church. A Hellenised Jew, he is presented in the Acts of the Apostles as a generous and respected member of the early Christian community and is explicitly described there as an apostle.

Barnabas played a decisive role in the acceptance of Paul following his conversion, vouching for him before the apostles in Jerusalem. He later travelled extensively with Paul on missionary journeys, contributing to the establishment of Christian communities in the eastern Mediterranean. According to later tradition, Barnabas was martyred at Salamis in Cyprus, the island of his birth, and became an important figure in early Christian memory and devotion.