Stewart Manor (formerly known as Sunrise Gardens) is a village in the Town of Hempstead in Nassau County, on Long Island, in New York, United States. It is considered part of the Greater Garden City area, which is anchored by the Village of Garden City. The population was 1,992 at the time of the 2020 census.

In 1925, a Brooklyn-based real estate development firm, Realty Associates, began developing a roughly 1.5-square-mile (3.9 km²) area of land – including the majority of what is now the Village of Stewart Manor – as a suburban neighborhood near Garden City, naming this new community Sunrise Gardens. This large development – running east to the vicinity of Adams Street from Covert Avenue, and south to Cambridge Avenue from the Hempstead Branch of the Long Island Rail Road – would bear this name until 1926, when residents changed the name to Stewart Manor, after the nearby LIRR station; the Sunrise Gardens name had proven unpopular among residents, spurring the change.

Stewart Manor incorporated as a village on August 19, 1927, after the adjacent village, New Hyde Park, wished to annex the community into its boundaries – a move that was met with stiff opposition by residents of Stewart Manor and by Realty Associates, which in turn supported the residents to incorporate, so to gain home rule and allow the community to be able to better control the local infrastructure. In turn, the residents – led by resident and attorney Walter Rathborne – petitioned to incorporate, and the majority of residents participating in the vote voted in favor of becoming a village. Rathborne was ultimately elected as its first Mayor.

The Stewart Manor Municipal Building, which houses the village's government and contains its firehouse, was erected in 1936.

In 1943, due to World War II making it difficult to recruit new police officers, the Stewart Manor Police Department – the village's law enforcement agency – was dissolved and absorbed by the Nassau County Police Department, which as of 2026 continues to serve as the police agency responsible for law enforcement within the village.

In 1987, the Stewart Manor Municipal Building was expanded. It would subsequently be expanded again in 2002.

The name reflects the community's proximity to the Stewart Manor station on the Long Island Rail Road in the adjacent village, Garden City, which is named after Alexander Turney Stewart.

According to the United States Census Bureau, the village has a total area of 0.2 square miles (0.52 km²), all land.