Ausar may refer to:
Osiris, an Egyptian god, usually identified as the god of the afterlife, the underworld and the dead. Ausar Thompson, a basketball player for the Detroit Pistons Serchio, the third longest river in the Italian region of Tuscany, known in antiquity as Auser. Ausar Auset Society, a Pan-African religious organization, with chapters all across the United States A brutal deathless warlord from the game Infinity Blade