Joseph Charles Bequaert was an American naturalist of Belgian origin, born 24 May 1886 in Torhout (Belgium) and died on 12 January 1982 in Amherst, Massachusetts.

[1] Bequaert obtained a doctorate in botany at the University of Ghent in 1908.

In 1916 he emigrated to the United States and was an associate researcher from 1917 to 1922 at the American Museum of Natural History.

He became an American citizen in 1921, and taught entomology at the Harvard Medical School.

With Walter Bernard Miller (1918–2000), he published The Mollusks of the Arid Southwest in 1973.