USS Thach (FFG-43), an Oliver Hazard Perry-class frigate, was the only ship of the United States Navy named for Admiral John Thach, a Naval Aviator during World War II, who invented the Thach Weave dogfighting tactic.

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.