Members: O, by state
- OHIO
- Bowling Green State University
- Central State University
- Cleveland State University
- Ohio State University, Newark
- Shawnee State University
- University of Akron
- Wright State University
- Youngstown State University
- OKLAHOMA
- Cameron University
- East Central University
- Langston University
- Northeastern State University
- Northwestern Oklahoma State University
- Oklahoma State Regents for Higher Education
- Oklahoma Panhandle State University
- Rogers State University - Claremore
- Southeastern Oklahoma State University
- Southwestern Oklahoma State University
- University of Central Oklahoma
- University of Science and Arts of Oklahoma