Benjamin Wistar Morris (sometimes III or Jr.; October 23, 1870 – December 4, 1944) was an American architect from Oregon who worked primarily in New York City.

[1] Intending to become a minister, he attended Trinity College in Hartford, Connecticut, but he later decided to become an architect and graduated from Columbia University in 1894.

[1] Upon his return to the United States, Morris joined the firm of Carrère and Hastings, where he assisted in preparing the successful entry for the design of the New York Public Library.

In addition, he designed residences in Clinton Hill, Brooklyn and Long Island for watch case manufacturer Joseph Fahys.

[7] Morris died on December 4, 1944, in New York City; he was survived by his wife, Alice Fenwick Goodwin, daughter Mary Wistar O'Connor, and son Benjamin.