Operated by Grupo 12 and visiting Los Cerillos from their base at Punta Arenas to participate in the annual Armed Forces Day flypast. Chile received 34 A-37Bs between 1975 and 1977 and a second batch of 10 ex USAF OA-37Bs including 637, ex 73-1064 in 1992. The type was withdrawn in 2009.