AO student chapters are found in almost every dental school in the United States, Canada, the two dental schools in Israel, plus students in many other countries.  

US and Canadian Chapters

• Alpha - SUNY at Buffalo | website
• Beta - University of Pennsylvania | website
• Gamma - Tufts University | website
• Delta - Harvard University | website
• Eta - Columbia University
• Iota - New York University
• Kappa - University of the Pacific
• Pi - University of Toronto
• Tau - USC | website
• Phi - University of Louisville
• Chi - University of Michigan | website
• Alpha Alpha - University of Illinois 
  
• Alpha Nu - University of Detroit | website
• Alpha Psi - NJDS
• Alpha Pi - McGill University/University of Montreal
• Alpha Tau - UCLA 
• Alpha Zeta - Arizona School of Dentistry
• Beta Beta - University of Florida
• Beta Eta - UT Houston
• Beta Epsilon - Boston University | website
• Beta Iota - University of Colorado 
• Zeta Mu - University of Maryland
• Tau Alpha Mu - Nova Southeastern University

International Chapters

• Alpha Sigma - Hebrew University
• Beta Kappa - Tel Aviv University