USS Gary (FFG-51) was an Oliver Hazard Perry-class frigate in the United States Navy. She was named for Medal of Honor recipient Commander Donald A. Gary (1903–1977).

The Oliver Hazard Perry class is a class of guided-missile frigates named after U.S. Commodore Oliver Hazard Perry, a commander noted for his role in the Battle of Lake Erie. Also known as the Perry or FFG-7 class, the warships were designed in the United States in the mid-1970s as general-purpose escort vessels inexpensive enough to be bought in large numbers to replace World War II-era destroyers and complement 1960s-era Knox-class frigates.