Thomas Hastings was an American architect and designer, known for his contributions to the field of architecture in the late 19th and early 20th centuries. He played a significant role in the design of various public buildings, including libraries and educational institutions, emphasizing classical styles and functional design. In addition to his architectural work, Hastings was a founding member of the American Institute of Architects (AIA) and served as its president. His influence extended to the design of the New York Public Library, where he contributed to the Beaux-Arts style that characterizes the building, showcasing his commitment to civic architecture.