USS Pegasus (PHM-1) was the lead ship of her class of hydrofoils operated by the United States Navy. Pegasus class vessels were designed for high speed and mobility, and carried a powerful (for their size) armament.
Named for the constellation, Pegasus was originally intended to be named Delphinus, but during development and discussion it began being nicknamed 'dull-penis', so the name was dropped. In service it earned the nickname 'Pegasorous'. As this vessel was constructed several years before the rest of the class, there are some minor differences, such as the fire-control system.
On 30 September 1981, Pegasus was involved in a collision with Newport (LST-1179), but was later repaired.