Willard Close Northup (1882–1942) was an American architect in North Carolina, who was the principal partner in the firm Northup & O'Brien. His firm was based in Winston-Salem, North Carolina. Northup began his architectural practice in 1906 and partnered with Leet Alexander O'Brien (1891-1963) in 1915 or 1916. Luther Lashmit joined the firm in 1927, and was lead architect for Graylyn while an employee of the firm.
Either alone or with O'Brien, Northup designed many of the prominent buildings of the period in Winston-Salem and elsewhere in North Carolina, along with over one hundred schools in the state.
A number of his works and the works of Northup & O'Brien are listed on the U.S. National Register of Historic Places (NRHP).
Works include:
Agnew Hunter Bahnson House, Jct. of W. Fifth and Spring Sts. Winston-Salem, North Carolina (Northup, Willard C.), NRHP-listed
Indera Mills, 400 S. Marshall St. Winston-Salem, North Carolina (Northup and O'Brien), NRHP-listed
Cicero Francis Lowe House, 204 Cascade Ave. Winston-Salem, North Carolina (Northup, Willard C.), NRHP-listed
Marion House and Marion Brothers Store, 7034 Siloam Rd., Siloam, North Carolina, NRHP-listed
O'Hanlon Building, 103 W. 4th St. Winston-Salem, North Carolina (Northup, Willard C.), NRHP-listed
Pepper Building, 100-106 W. 4th St. Winston-Salem, North Carolina (Northup and O'Brien), NRHP-listed
Reidsville High School, Former, 116 N. Franklin St. Reidsville, North Carolina (Northup, Willard C.), NRHP-listed
Salem Town Hall, 301 S. Liberty St. Winston-Salem, North Carolina (Northup, Willard C.), NRHP-listed
Winston-Salem City Hall, 101 S. Main St. Winston-Salem, North Carolina (Northup and O'Brien), NRHP-listed
One or more works in Downtown North Historic District, Roughly bounded by W. Fifth, W. Eighth, N. Main and N. Cherry Sts. Winston-Salem, North Carolina (Northup and O'Brien), NRHP-listed
One or more works in Second Street Historic District, Portions of 100 and 200 blks N. Second St. and 100 blk West North St. Albemarle, North Carolina (Northup and O'Brien), NRHP-listed
