Orontius is a name of Latin origin. It can refer to:
People Marcellus Orontius, a disciple of Plotinus Orontius of Lecce, or Oronzo, saint Vincent, Orontius, and Victor (d. 305 AD), saints Orontius Finnaeus (Oronce Finé) (1494-1555), French cartographer and mathematician
Places Orontius (crater), on the Moon, named after Orontius Finnaeus
See also Orontes River Oronzo (disambiguation)