Golden Beach is an upscale census-designated place (CDP) in St. Mary's County, Maryland, United States.

It consists of a small housing development with a private beach, located within the larger postal designation of Mechanicsville.

A 50-acre portion of the area now named Golden Beach was a plantation called "The Fishing Place" which was awarded to Thomas Lamar in 1677 (because spelling varied in those days, in the grant he is called "LaMare").

It was one of several plantations eventually owned by Lamar but he considered it his favorite as it was his primary residence.

Know ye that we for and in consideration that Thomas LaMare of Calvert County in our said province of Maryland hath due unto him fifty acres of land within our Province ...upon such conditions and terms as are expressed in the Conditions of Plantation of our late father Cecelius of noble memory under his greater seal at Arms bearing date at London the second day of July of our Lord 1649... Do hereby grant unto him the said Thomas LaMare all the parcel of land called The Fishing Place situate lying and being in Calvert County on the West side of Patuxent River and North side of Trent Creek...To have and to hold the same unto him the said Thomas La Mare, his heirs and assigns forever-to be holden of us and our heirs at our receipt of St. Marries at the two most usual feasts of the year, viz: at the feast of the Annunciation of the Blessed Virgin Mary and the feast of St. Michael the Arch Angel by even and equal portions the Rent of two Shilling Sterling in Silver or Gold.