- the ancient Greek god of the sea, with the power to cause earthquakes, identified by the Romans with Neptune.
- a 34-foot (10-meter), submarine-launched U.S. ballistic missile with up to 10 warheads and a range of 2,800 miles (4,502 km).
- the god of the sea and of earthquakes; brother of Zeus, Hades, and Hera. He is generally depicted in art wielding a trident
- a US submarine-launched ballistic missile
