Sidney Armor Reeve (March 27, 1866, in Dayton, Ohio - June 12, 1941, in Nyack, NY) was an author and professor of Steam and Hydraulic Engineering at the Worcester Polytechnic Institute between 1896-1906.
During his time at Worcester Polytechnic Institute, Reeve was an active member in the Pi Iota Chapter of Phi Gamma Delta fraternity.
He was employed as a consulting engineer in New York City between 1908 and 1932 and held over 50 patents on inventions.