To date, the participating teams in OC3 come from the following universities:
- American University of Beirut - Lebanon
- Beirut Arab University - Lebanon
- Lebanese American University - Lebanon
- Lebanese International University - Lebanon
- Lebanese University - Lebanon
- University of Balamand - Lebanon
- American University in Cairo - Egypt
- American University of Sharjah - United Arab Emirates
- Bilkent University - Turkey
- Istanbul Technical University - Turkey
- Middle East Technical University - Turkey