Babb, Cook & Willard was a New York City-based architectural firm established in 1884 that designed many important houses and commercial buildings. The principals of the firm were George Fletcher Babb (1836–1915), Walter Cook (1843–1916), and Daniel W. Willard. Willard left the firm in 1908, and was replaced by Winthrop A. Welch. The firm was subsequently renamed Babb, Cook and Welch until 1912, when it became Cook and Welch.