| T' | Temperature Rate of change 
| Others |
| T+ | Time Postintegration
| Others |
| T+1 | Trade date Plus One Day
| Others |
| T+3 | Trade date Plus Three days
| Others |
| T- | Time Prior to Launch
| Others |
| T-0 | Time Zero
| Others |
| T-1 | 1st Thoracic Vertebrae
| Others |
| T-1 | first thoracic vertebrum
| Others |
| T-1 | Jayhawk twin-engine trainer aircraft
| Others |
| T-1 | Telephone data line, 1.544 Megabits per second
| Others |
| T-10 | tenth thoracic vertebrum
| Others |
| T-11 | eleventh thoracic vertebrum
| Others |
| T-12 | twelfth thoracic vertebrum
| Others |
| T-2 | 2nd Thoracic Vertebrae
| Others |
| T-2 | second thoracic vertebrum
| Others |
| T-3 | third thoracic vertebrum
| Others |
| T-4 | fourth thoracic vertebrum
| Others |
| T-5 | fifth thoracic vertebrum
| Others |
| T-6 | sixth thoracic vertebrum
| Others |
| T-7 | seventh thoracic vertebrum
| Others |
| T-705 | Favipiravir
| Others |
| T-8 | eighth thoracic vertebrum
| Others |
| T-9 | ninth thoracic vertebrum
| Others |
| T-A-W | Tenant At Will
| Others |
| T-AC | IEEE Transactions on Automatic Control
| Others |
| T-ACS | Auxiliary Crane Ship, Military Sealift Command manned
| Others |
| T-AES | IEEE Transactions on Aerospace and Electronic Systems
| Others |
| T-AGOS | Auxiliary General Ocean Surveillance ship, Military Sealift Command manned
| Others |
| T-AGOS MOD | Auxiliary General Ocean Surveillance ship (Military Sealift Command manned) MODification
| Others |
| T-AH | Hospital Ship
| Others |
| T-AKR | Fast Logistics Ship
| Others |
| T-AP | IEEE Transactions on Antennas and Propagation
| Others |
| T-AP | Transport, Military Sealift Command manned
| Others |
| T-ARA | Tiara
| Others |
| T-ASA | Television Audio Support Agency
| Others |
| T-ASC | IEEE Transactions on Applied Superconductivity
| Others |
| T-AVB | Aviation Logistics Support Ship
| Others |
| T-BC | IEEE Transactions on Broadcasting
| Others |
| T-Bill | Treasury Bill
| Others |
| T-BM | Two Bit Millioonairre
| Others |
| T-BME | IEEE Transactions on Biomedical Engineering
| Others |
| T-Boned | Get hit broadsided
| Others |
| T-BOSIET | Tropical Basic Offshore Safety Induction and Emergency Training
| Others |
| T-C | IEEE Transactions on Computers
| Others |
| T-CAD | IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
| Others |
| T-CAS | IEEE Transactions on Circuits and Systems
| Others |
| T-CAS1 | IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications
| Others |
| T-CAS2 | IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
| Others |
| T-CAT | Test coverage anaylsis tool
| Others |
| T-CE | IEEE Transactions on Consumer Electronics
| Others |