The Singer Building was an office building and early skyscraper in Manhattan, New York City. The headquarters of the Singer Manufacturing Company, was at the northwestern corner of Liberty Street and Broadway in the Financial District of Lower Manhattan. Frederick Gilbert Bourne, leader of the Singer Company, commissioned the building, which architect Ernest Flagg designed in multiple phases from 1897 to 1908. The building's architecture contained elements of the Beaux-Arts and French Second Empire styles.

Ernest Flagg was an American architect in the Beaux-Arts style. He was also an advocate for urban reform and architecture's social responsibility.