| Tangent = Opposite over Adjacent | Mathematics | TOA |
| Transfer Of Authority | Military | TOA |
| Total Operating Assets | Accounting | TOA |
| Top Of Atmosphere | Meteorology | TOA |
| Trade-off Analysis | Military and Defence | TOA |
| Trade- Off Analysis | Military | TOA |
| Time Off Award | Award or Medal | TOA |
| Table Of Authorities | Media | TOA |
| Table of Allowance | Military and Defence | TOA |
| Terre Ocean Atmosphere | Ocean Science | TOA |
| Take- Off Angle | Electronics | TOA |
| The Opportunity Agenda | Organization | TOA |
| The One At | Oncology | TOA |
| Tetracyclic Oxindole Alkaloid | Chemistry | TOA |
| Teach One Another | Education | TOA |
| Texas Oncology Abilene | Medical | TOA |
| Tangent Of An | Mathematics | TOA |
| Take-off Angle | Electronics | TOA |
| Time Of Arrival | Military | TOA |
| Transportation Operating Agency | Military | TOA |
| Torrance (ca) | Airport Code | TOA |
| Tetracyclic Oxindole Alkaloids | Physiology | TOA |
| Tail Of The Arrow | Media | TOA |
| Trials Of Ascension | Religious | TOA |
| Total Obligation Authority | Military | TOA |
| Texas Oncology Amarillo | Medical | TOA |
| Transporte Oruga Acorazado | Spanish | TOA |
