Dover Plains is a hamlet (and census-designated place) in Dutchess County, New York, United States. The population was 1,323 at the 2010 census. It is part of the Poughkeepsie–Newburgh–Middletown Metropolitan Statistical Area. Dover Plains is in the northern part of the Town of Dover, the southwest corner of the Town of Amenia and the southeast corner of the Town of Washingtion on NY 22.
Metro-North Railroad has a Harlem Line station here, bringing commuters to New York City. This station was the line's northern terminus for many years, until the line was expanded four miles north to Wassaic in the early 2000s.