- T-Mobile Czech Republic,
- THALES [France]
- TOTAL FINA ELF
- Tarbiat Modares University [Tehran]
- Technical University of Berlin | Technische Universität Berlin
- Technical University of Cluj-Napoca
- Technical University of Kosice
- Technical University of Košice
- Technical University of Lisbon
- Technische Universitat Darmstadt Fachbereich Informatik
- Technische Universitat Darmstadt Fachbereich Informatik, Kryptographie und Computeralgebra
- Technische Universität Darmstadt - Technical University of Darmstadt
- Technische Universität Dresden = Dresden University of Technology
- Technische Universität Munchen - Technical University Munich - Université Technique de Munich
- Technological University [Dublin]
- Telenor
- Thales SIX GTS France
- Thammasat Business School
- Thammasat University
- The George Washington University
- The Irish Software Engineering Research Centre
- The Mathematics Institute, Reyjavik University
- The Netherlands Organisation for Applied Scientific Research
- Third Research Institute
- Tomsk State University of Control Systems and Radioelectronics
- Tongji University
- Toulouse Mind & Brain Institut
- Trinity College Dublin
- Tsukuba University of Technology
- Tunghai University [Taichung]