Buchanan is a village located in the town of Cortlandt in Westchester County, New York. The population was 2,230 as of the 2010 census.
The now decommissioned Indian Point nuclear power facility is located in Buchanan. The 2000 Rockefeller Center Christmas tree also came from Buchanan. The 80-foot tall Norway spruce was donated by Bill and Frances Heady after its execution. Bill Heady planted the tree in 1950.