- ThedaCare Medical Center Waupaca
- ThedaCare Regional Medical Center - Appleton
- ThedaCare Regional Medical Center-Neenah
- Theis Precision Steel Corp.
- Theorem Clinical Research
- Therapy Services Assoc PC
- Theresa Roberts, Inc.
- Thermo King Mid Atlantic
- Therus Corporation
- Thibodaux Regional Medical Center
- Think Design, Inc.
- Thiokol
- Third Age Incorporated
- Third Marine Division Association
- Third Street Family Health Services
- THOCC - Bradley Memorial Campus
- THOCC - New Britain Campus
- Thoma Thoma
- Thomas G. Powell, Inc.
- Thomas Hospital
- Thomas Jefferson University Hospital - Jefferson Hospital for Neuroscience
- Thomas Memorial Hospital
- Thomas R. Bolling, MD
- Thomasville Regional Medical Center
- Thompson and Associates, P.C.
- Thompson Hospitality Corp.
- Thompson, Siegel and Walmsley, Inc.
- Thomson-West
- Thoracic Transplant Services
- Three Streams Family Health Center
- Threw The Woulds
- Thrifty Inn, Mt. Vernon
- Thunder Bay Community Health Services
- Thurston Consulting
- THW Design
- TI Automotive
- TIA
- Tibbs, Hansen, Smith and Riegel, LTD
- Ticket Work
- TidalHealth Nanticoke
- Tidelands Georgetown Memorial Hospital
- Tidelands Waccamaw Community Hospital
- Tiffany and Co.
- Tiffin-Seneca United Way
- Tift Regional Health System
- Tift Regional Medical Center
- Tiger Corp.
- Tigers for Donnating Life
- Time and Place Strategies, Inc.
- Time Warner Telecom