| Acronym | Definition |
|---|
| TISD➣Tomball Independent School District (Tomball, TX) |
| TISD➣Technology and Innovation for Sustainable Development (conference; Thailand) |
| TISD➣Texarkana Independent School District (Texas, USA) |
| TISD➣Transportation Infrastructure Security Division |
| TISD➣Tactical Information Systems Division |
| TISD➣Theater Integrated Situation Display |
| TISD➣Tactical Internet System Description |
| TISD➣Teacher In-Service Day |
| TISD➣Turkish Institute for Security and Democracy (Washington, DC) |