Gaius Julius Hyginus (; 64 BC – AD 17) was a Latin author, a pupil of the famous Cornelius Alexander Polyhistor, and a freedman of Caesar Augustus. He was elected superintendent of the Palatine library by Augustus according to Suetonius' De Grammaticis, 20. It is not clear whether Hyginus was a native of the Iberian Peninsula or of Alexandria.

Gaius Julius Hyginus (; 64 BC – AD 17) was a Latin author, a pupil of the famous Cornelius Alexander Polyhistor, and a freedman of Caesar Augustus. He was elected superintendent of the Palatine library by Augustus according to Suetonius' De Grammaticis, 20. It is not clear whether Hyginus was a native of the Iberian Peninsula or of Alexandria.