James Mary Early O'Grady (March 31, 1863 Rochester, Monroe County, New York – November 3, 1928 Rochester, Monroe Co., NY) was an American lawyer and politician.

He studied law, was admitted to the bar in 1885, and practiced in Rochester.

He served as member of the Board of Education of Rochester from 1887 to 1892, and was president in 1891 and 1892.

He was a member of the New York State Assembly (Monroe Co., 2nd D.) in 1893, 1894, 1895, 1896, 1897 and 1898; and was Speaker in 1897 and 1898.

He was interred in the Holy Sepulchre Catholic Cemetery.