McMaster House is a historic home located at Bath in Steuben County, New York. It is a 1+1⁄2-story, five-bay frame residence built about 1830. It is a center-hall, vernacular Greek Revival-style farmhouse with a gable roof and brick interior end chimneys. Also on the property is a 1+1⁄2-story 19th-century barn.

It was listed on the National Register of Historic Places in 1983.