| Acronym | Meaning |
| TVG | Tick |
| TVA | Tennessee Valley Authority |
| NRTA | National Thoroughbred Racing Association - National Rat Terrier Association - National Retail Tenants Association - National Retired Teachers Association - Northwest Regional Transmission Association |
| IQ | Intelligence Quotient -Iraq (ISO 3166 Digram) |
| TZC | Tetrazolium Chloride |
| REACH | Registration |
| SU | Soviet Union (ISO 3166 Digram; Obsolete 1992) - Sudan (FIPS 10-4 Country Code) |
| FARC | Fuerzas Armadas Revolucionarias De Colombia (Spanish |
| PCP | Phencyclidine - Pneumocystis Jiroveci Pneumonia (formerly Peumocystis Carinii) -Probabilistically Checkable Proof |
| USA | United States Of America (alsoISO 3166 Trigram) - United States Army |