Harmanus Welch Hall is a freshman dormitory at Yale University in New Haven, Connecticut, USA. The building is located on Yale University's Old Campus. Pierce N. Welch, an 1862 graduate of Yale College, Mrs. Cora Van Milligan, and Mrs. Grace M. Davies, heirs of Harmanus M. Welch, mayor of New Haven from 1860 to 1863, donated the building to Yale in 1891 in accordance with their father's wishes. The architect Bruce Price designed the building.