• Sinis peninsula in western Sardinia, forming the northern cape of the Bay of Oristano • Titular see of Sinis, Catholic diocese • Sinis, now called Sinno, a river in southern Italy == Other ==
Other
• Sinis (mythology), also known as Pityokamptes, a bandit killed by Theseus in Greek mythology • Sinis, the name of a powerful Shade in the Myth (computer game series) slain by Alric in single combat