Nabor and Felix (d. c. AD 303) were Christian martyrs thought to have been killed during the Great Persecution under the Roman emperor Diocletian.

A pair of saints "Nabor and Felix" were also said to have been martyred at Nicopolis in Lesser Armenia in AD 320 alongside SS "Januarius and Marinus".

A church (Basilica Naboriana) was built over their new tomb, as recorded by Paulinus of Milan in his life of Saint Ambrose.

When Emperor Frederick Barbarossa captured Milan in 1158, he gave some of the relics of Saints Felix and Nabor to Rainald of Dassel, archbishop of Cologne, who brought them to his episcopal see.

Due to linguistic corruption, the name Ambor (Nabor) became confused with that of the more famous Bishop of Milan Saint Ambrose (San Ambrosio).