William Erwood Old Jr. usually known as Bill Old, (14 April 1928 in Norfolk, Virginia – 31 December 1982 in New York City)[1] was an American malacologist.

[1] He helped build the American Museum's mollusc collection into a leading research resource.

[1] He was the first collections manager[citation needed] in malacology at the American Museum of Natural History.

[1] He was extremely devoted to his science and was well known as a shell show judge in many parts of the United States.

[citation needed] As junior author to William K. Emerson, he named several species of marine mollusks, including: This article incorporates public domain text from the reference [1]