William Greene Binney (October 22, 1833 – August 3, 1909) was an American attorney known for his avocation as a malacologist, working mostly during the second half of the nineteenth century. He was responsible for volumes 4 and 5 of The Terrestrial Air-Breathing Mollusks of the United States, a task he took over from his father, Amos Binney, and collaborator, Augustus Addison Gould. The ninety engraved plates which were part of volume 5, illustrating most of the then known land mollusk fauna, are particularly noteworthy.