口虾蛄（学名：Oratosquilla oratoria）为虾蛄科口虾蛄属下的一个种。

Oratosquilla oratoria is a species of mantis shrimp found in the Western Pacific. It is widely harvested in Japan where it is known as shako(シャコ, 蝦蛄) and eaten as sushi. Like other members of its order it has a powerful spear, which it uses to hunt invertebrates and small fish. It grows to a length of 185 millimetres (7.3 in), and lives at depths of 10–100 metres (33–328 ft).