Bayside Cemetery and Gatehouse Complex is a historic cemetery and gatehouse located at Potsdam in St. Lawrence County, New York. The cemetery was established in 1865 and the gatehouse complex constructed in 1901. The gatehouse complex is a Châteauesque style, Late Victorian red Potsdam ashlar sandstone building. It includes a receiving room for the deceased and mourners, quarters for the cemetery custodial family, and a bell tower. The cemetery includes a number of notable structures and objects including the Clarkson mausoleum (1873), Morgan family obelisk, and Soldiers Monument (1903).