The Greenwood Union Cemetery is a cemetery in Rye and Harrison in Westchester County, New York.

James Parker and David Brooks of Rye donated 3 acres (12,000 m2) of land to Christ's Church, Rye, with plots to be reserved for the ministers of the three churches of Rye and their families.

Two strips on the eastern and western sides of the grounds were to be used as a public cemetery.

[1] In January 1855, the trustees of the Methodist Episcopal Church, Rye bought an additional 8 acres (32,000 m2) contiguous to the cemetery, and, between 1864 and 1868, they added more than 6 acres (24,000 m2).

[1] This arrangement continued from 1902 to 1984, under the leadership of successive generations of the Cowan family, but in 1984 the responsibility of management was turned over to a nonprofit organization with a volunteer elected board of trustees whose members are lot owners and local community leaders.