|Naval Aircraft Factory NO|
|Role||Naval observation floatplane|
|National origin||United States|
|Manufacturer||Naval Aircraft Factory|
|Designer||Naval Aircraft Factory|
|Primary user||United States Navy|
The Naval Aircraft Factory NO was an American three-seat observation floatplane, designed by the Naval Aircraft Factory (NAF) for the United States Navy. Powered by a 435 hp (324 kW) Curtiss D12 engine, three were built by the NAF with the designation NO, and a further three were built by Martin with the designation M2O.