Atlantic Ocean region {= AOR}
AC Atlantic Ocean Islands
North Atlantic biogeographical province
NATO SATCOM North Atlantic Treaty Organization SATellite COMmunications
NATO North Atlantic Treaty Organization
NARS North Atlantic Radio System
NARCOM North Atlantic Relay COMunication system
Mid-Atlantic Rift Valley
mediterranean atlantic province
International Commission for the South-east Atlantic Fisheries
International Commission for the North West Atlantic Fisheries
high seas of Central Atlantic Ocean
Great Lakes Atlantic Steam Ships
Great Atlantic & Pacific Tea
GARP Atlantic Tropical Experiment