William Gurley (March 16, 1821 – January 11, 1887) co-founded what is now known as Gurley Precision Instruments with his brother, and served as vice president and, from 1886 to 1887, acting president of Rensselaer Polytechnic Institute. Gurley was a long-time trustee of Rensselaer, having been elected to that position in 1855. He was secretary of the institution from 1861 to 1872, vice-president from 1872 to 1887 and acting president from 1886 to 1887. He died on January 11, 1887 in Troy. The W. & L. E. Gurley Building in Troy was designated a National Historic Landmark in 1983.