Gallus may be:
- Quintus Roscius Gallus (c. 126 - 62 BC), Roman actor
- Gaius Asinius Gallus, Roman consul
- Trebonianus Gallus (251-253), Roman emperor
- Gallus (-354), cousin of Constantius II
- Saint Gall (7th century)
- Jacobus Gallus (1550-1591), composer
- Thomas Gallus
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