What does NTSA stand for?

National Tay-Sachs Association - Later, NTSAD (EA)

National Technical Services Association (EA)

National Traffic Safety Agency - Federal Highway Administration

National Trails System Act (COE)

National Training Systems Association (EA)

National Transportation Safety Association - Defunct (EA)

National T-Shirt Association (EA)

National Tuberous Sclerosis Association (EA)

Naval Telecommunications System Architect (MCD)

Navy Tactical Support Activity (DNAB)

NetWare Telephony Services Architecture

Networking Technical Support Alliance

Northern Territory Softball Association - Australia

Norway Technical Science Academy