Lucy Wallace Porter (January 23, 1876 – September 19, 1962), also known as Lucy Bryant Wallace, was an American photographer. In 1912 she married the Harvard medievalist, Arthur Kingsley Porter (1883–1933). His published works included Romanesque Sculpture of the Pilgrimage Roads and Spanish Romanesque Sculpture. He is known to have been an innovative “scholar-photographer” though later critical studies have shown that Wallace Porter was the principal photographer who accompanied him on his travels from 1919 onwards. Upon her death, her estate was bequeathed to Harvard University.