- Tallinn University of Technology
- Technical University of Cluj-Napoca
- Technical University of Crete [Chania]
- Teemphotonics
- Télécom Bretagne
- THALES Airborne Systems [Elancourt]
- THALES [France]
- Thales LAS France
- Thales Research and Technologies [Orsay]
- Thales research and technology, ceramic and packaging department
- Thales Research and Technology [Palaiseau]
- THALES Research & Technology
- THALES Research & Technology-France, Ceramics & Packaging Department,
- The Hebrew University of Jerusalem
- The National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) [Moscow, Russia]
- Théorie
- Théorie de la Matière Condensée
- Theory Group
- Thérapeutiques substitutives du coeur et des vaisseaux
- The University of Queensland
- The University of Tokyo
- Tohoku University [Sendai]
- Tokyo Institute of Technology [Tokyo]
- TOTAL FINA ELF
- Traitagri Centre
- Transduction, Propagation et Imagerie Acoustique - IEMN
- Tribhuvan University