Basil of Sirmium

Basil of Sirmium was a martyr at Sirmium, a city of Pannonia in present-⁠day Serbia, a saint of the undivided Church.

The Syriac Martyrology of 411 commemorates him on 29 August, by the Julian calendar (old style). The Latin Hieronymian Martyrology, of the same origin, gives at Sirmium the form Basilla, a woman's name, and calls her a virgin; it is not clear whether the same person is meant. No other account survives.