The following colleges and universities are all member institutions of the Association of Texas Graduate Schools.
- Abilene Christian University
- Angelo State University
- Baylor College of Dentistry
- Baylor College of Medicine
- Baylor University
- Criswell College
- Hardin–Simmons University
- Houston Baptist University
- Lamar University
- Midwestern State University
- Our Lady of the Lake University
- Prairie View A&M University
- Rice University
- Sam Houston State University
- Southern Methodist University
- Texas State University – San Marcos
- St Edward’s University
- St Mary’s University
- Stephen F Austin State University
- Sul Ross State University
- Tarleton State University
- Texas A&M University
- Texas A&M University – Central Texas
- Texas A&M University – Commerce
- Texas A&M University – Corpus Christi
- Texas A&M University – Kingsville
- Texas A&M University – Texarkana
- Texas Christian University
- Texas Southern University
- Texas Tech University
- Texas Woman’s University
- Trinity University
- University of Dallas
- University of Houston
- University of Houston – Clear Lake
- University of the Incarnate Word
- University of Mary Hardin–Baylor
- University of North Texas
- University of North Texas – Health Science Center
- University of St Thomas
- University of St Thomas School of Theology at St Mary’s Seminary
- The University of Texas at Arlington
- The University of Texas at Austin
- The University of Texas at Brownsville
- The University of Texas at Dallas
- The University of Texas at El Paso
- The University of Texas at San Antonio
- The University of Texas at Tyler
- The University of Texas Health Science Center at Houston
- The University of Texas Graduate School of Biomedical Sciences at Galveston
- The University of Texas – Pan American
- The University of Texas – Permian Basin
- The University of Texas Southwestern Medical Center at Dallas
- University of Texas TeleCampus
- Wayland Baptist University
- West Texas A&M University