| TIG | Tal Inert Gas 
| Others |
| TIG | Technology Implementation Group
| Others |
| TIG | Technology Initiative Grants
| Others |
| TIG | Technology Integration Group
| Others |
| TIG | Teenagers Into God
| Others |
| TIG | Term Information Group
| Others |
| TIG | Tetanus Immune Globulin
| Others |
| TIG | Tetanus ImmunoGlobulin
| Others |
| TIG | The Ice Gym
| Others |
| TIG | The Immortal God
| Others |
| TIG | The Infrastructure Group
| Others |
| TIG | The Insurance Group
| Others |
| TIG | The Internet Group
| Others |
| TIG | The Intimidation Game
| Others |
| TIG | Theatre Intern Group
| Others |
| TIG | Thermal Ignition Guide
| Others |
| TIG | This Is Great
| Others |
| TIG | Tiger file ( U S Government distributed maps)
| Others |
| TIG | Tiger Impact Group
| Others |
| TIG | Tigre
| Others |
| TIG | Time In Grade
| Others |
| TIG | Time Independent Group
| Others |
| TIG | Time of IGnition
| Others |
| TIG | Tip Inert Gun
| Others |
| TIG | Topical Interest Groups
| Others |
| TIG | Topology Information Group
| Others |
| TIG | Towed Independent Gun
| Others |
| TIG | Transition Improvement Grant
| Others |
| TIG | Trauma Illness and Grief
| Others |
| TIG | Trends in Genetics
| Others |
| TIG | Trials Issues Group
| Others |
| TIG | Trust In God
| Others |
| TIG | Tungstan Inert Gas
| Others |
| TIG | Tungsten Inert Gas
| Others |
| TIG | Tunsten Inert Gas
| Others |