Pine Valley was a short-lived incorporated village in the Town of Southampton in Suffolk County, on Long Island, in New York, United States.

In 1987, residents of what would become Pine Valley voted to incorporate their area in order to gain home rule and authority over local zoning of the community, as they were unhappy with the way their area was being governed by the Town of Southampton; many locals felt that Southampton neglected the area.

[3] Furthermore, a series of blunders made by officials prevented the village from creating zoning laws and building moratoriums, and hindered the ability for the new village to mature properly.

[2] The Village of Pine Valley occupied roughly 3.2 square miles (8.3 km2).

[11][12] At the time of the 1990 United States census, the population of Pine Valley was roughly 791.