Henry Molleston III (January 1, 1762 – November 11, 1819) was an American physician and politician from Dover, in Kent County, Delaware.
Molleston was born in Mispillion Hundred, Kent County, Delaware, near Thompsonville.
Henry III was the brother of Jemima Ann, the wife of Colonel John Haslet, and uncle of Dr. William G. Molleston, surgeon in the Delaware Regiment and member of the State House.
He married Mary (Molly) Combe in 1793 and they had three known children: Elizabeth, Jemima Ann, and a son.
In 1800 it is believed he lived at "Passey" or "Cooper's Corner", where State Street crosses U.S. Highway 13.