NFAS

NFAS can mean:


 * Non-Facility Associated Signalling, a Primary Rate Interface configuration whereby multiple T1 carriers share a signaling channel (or D channel).
 * National Field Archery Society, a UK field archery organisation
 * National Football Association of Swaziland, former name of the Eswatini Football Association
 * Nuclear Field 'A' School (U.S. Navy), an introductory training academy for Electronics Technician Nuclear Power (ETN), see Electronics technician (United States Navy)