Maryden is an unincorporated community in Washington County, in the U.S. state of Missouri.
A post office called Maryden was established in 1898, and remained in operation until 1903.[1] Annette Mary Denby, an early postmaster, named the place after herself using parts of her middle and last names.[2] A variant name was "Hickory Grove". The community once had Hickory Grove Schoolhouse, now defunct.