James Renwick, Jr. (November 11, 1818, Bloomingdale, in upper Manhattan, New York City – June 23, 1895, New York City), was a prominent American architect in the 19th-century. Renwick was born into a wealthy and well-educated family. His mother, Margaret Brevoort, was from a wealthy and socially prominent New York family. His father, James Renwick, was an engineer, architect, and professor of natural philosophy at Columbia College, now Columbia University. Renwick is buried in Green-Wood Cemetery in Brooklyn, New York, with his wife and father.