Perrin Henry McGraw (December 28, 1822 McGrawsville, Cortland County, New York – October 16, 1899) was an American merchant and politician from New York.
He was the son of Assemblyman Harry McGraw (c.1797–1849) and Sally (Smith) McGraw (d. 1874).
On April 26, 1846, he married Louisa Pritchard (1824–1890), and they had several children.
He was a member of the New York State Assembly (Cortland Co.) in 1854; and a member of the New York State Senate (23rd D.) in 1860 and 1861.
He was buried at the McGraw Rural Cemetery.