- Texas Tech University Student Chapter
- Thais Fonseca
- Thales Teixeira
- The Babcock & Wilcox Company
- The Chessie System
- The Egyptian Cabinet
- The Finance Ministry of Kuwait
- The Hertz Corporation
- The Lancester Prize was not awarded in 2009.
- The Ohio State University Student Chapter
- The University of Texas at Austin Student Chapter
- The University of Texas at Dallas Student Chapter
- The Walt Disney Company
- Theo A. Arentze
- Theodore Costy
- Theodore E. Keeler
- Theodore K. Ralphs
- Theodore Papalexopoulos
- Theodore T. Allen
- Theophane Weber
