This list includes academics and researchers who volunteered to be reviewers for our journals.
Those who have actually reviewed papers can be also found in the relative list of each journal.
All reviewers after the reviewing procedure will receive a Letter of Thanks from ATINER.

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•Dr. Alka Obadic, Full Professor, Department of Macroeconomics and Economic Development, Faculty of Economics and Business, University of Zagreb, Croatia.
•Dr. Javier Mauricio Obando Ulloa, Researcher, Costa Rica Institute of Technology, Costa Rica.
•Dr. Tony Ikpomwosa Obaseki, Systems Librarian, Ambrose Alli University -University Library, Nigeria.
•Dr. Charles Obot, Senior Lecturer/Researcher, Department of Communication Arts, University of Uyo, Nigeria.
•Dr. Maureen O'Brien, Associate Professor, St. Cloud State University, USA.
•Dr. Sezen Ocak, Visiting Research Associate, ATINER, Greece.
•Dr. Kwabena Ofori-Attah, Associate Professor, Central State University, USA.
•Dr. Uchechi Ogbuagu, Associate Professor, University of Calabar, Nigeria.
•Mr. Cecily Ogechi Nwokocha, Lecturer, Alvan Ikoku Federal College of Education- Owerri, Nigeria.
•Mr. Hugh O'Gorman, Professor and Head, California State University, Long Beach, USA.
•Dr. Sinan Ogun, Head, Red Rock Agricultural Pastoral R&D, Turkey.
•Dr. Michael Segun Ogunmuyiwa, Senior Lecturer, Olabisi Onabanjo University, Nigeria.
•Mr. Halil Ibrahim Oguz, Associate Professor, Nevsehir Haci Bektas Veli University, Turkey.
•Dr. Ahmet Oguz, Associate Professor, History Department, Nevsehir Haci Bektas Veli University, Turkey.
•Dr. Donatus Ohajianya Otuiheoma, Professor, Federal University of Technology -Department of Agricultural Economics- Owerri- Imo State, Nigeria.
•Mr. Vlasios Oikonomou, Researcher, University of Groningen, Netherlands.
•Dr. Emmanuel Oladipo Ojo, Associate Professor, Department of History & International Studies, Faculty of Arts, Ekiti State University, Nigeria.
•Mr. Olumuyiwa Ojo, Senior Principal Lecturer, The Polytechnic- Ibadan, Nigeria.
•Mr. Michael Adedotun Oke, Executive Director, Federal Capital Territory Agricultural Development Program -Michael Adedotun Oke Foundation & Extension Agent, South Africa.
•Mr. Adekunle Oke, Doctoral Researcher, Robert Gordon University, UK.
•Dr. Patrick Nwabueze Okechukwu, Assistant Professor, UCSI University, Malaysia.
•Dr. Okorafor Emmanuel Okereke, Lecturer, Michael Okpara University of Agriculture -Department of Statistics- Umudike, Nigeria.
•Dr. Peter Okoh, Researcher, Norwegian University of Science and Technology, Norway.
•Mr. Olalekan Charles Okunlola, Research Fellow, Institute of Peace and Conflict Resolution, Nigeria.
•Dr. Gabriel Oladipo, Senior Lecturer, University of Port Harcourt, Nigeria.
•Dr. Ganiat Olatokun, Lecturer 1, University of Ilorin, Nigeria.
•Dr. Funsho Azeez Olatunde, Lecturer, University of Lagos - Faculty of Education-Dept of Arts & Social Sciences Education- Akoka-Yaba, Nigeria.
•Dr. Musibau Olatunde Olosunde, Lecturer, Federal University of Agriculture -Department of Horticulture- Abeokuta, Nigeria.
•Mr. Cezany Josef Olbromski, Ph.D. Student, University of Maria Curie, Poland.
•Dr. Bernard Oliver, Dean of Education and Professor of Educational Leadership, Valdosta State University, USA.
•Dr. Marinko Oluic, Adviser, GEOSAT Ltd, Croatia.
•Dr. William O'Meara, Professor, James Madison University -Dept of Philosophy and Religion, USA.
•Dr. Mike Omilusi, Freelance Journalist, Ekiti State University -Teacher, Nigeria.
•Dr. Ahmed A. Omran, Professor, Department of Mathematics, University of Babylon, Iraq.
•Ms. Selin Onayli, PhD Candidate, Middle East Technical University, Turkey.
•Dr. Orpha Ongiti, Director & Senior Lecturer, Africa Nazarene University, Kenya.
•Dr. Ibrahim Onour, Professor, School of Management Studies, University of Khartoum, Sudan.
•Dr. Patrick Onsando, Lecturer, Moi University, Kenya.
•Dr. Bright Chidugam Opara, Head, Rivers State University of Science and Technology, Nigeria.
•Dr. Jacinta A. Opara, Professor, Department of Biological and Environmental Sciences, Kampala International University, Uganda.
•Mr. Lawrence Olusola Oparinde, Assistant Lecturer, The Federal University of Technology- Department of Agricultural & Resource Economics- Akure- Ondo State, Nigeria.
•Dr. Jose Ordonez, Professor, University of Los Andes, Venezuela.
•Dr. Afolakemi Oredein, Dean, Faculty of Arts & Education, Lead City University, Nigeria.
•Dr. Erol Nezih Orhon, Associate Professor, Anadolu University, Turkey.
•Dr. Violeta Oro, Head, Nematology Laboratory, Institute of Plant Protection and Environment, Serbia.
•Dr. Stelios Orphanos, Lecturer, Frederick University, Cyprus.
•Mr. Amador Ortiz, Professor, Technological University of Costa Grande de Guerrero, Mexico.
•Dr. Jones Orumwense, Professor, Wellspring University, Nigeria.
•Dr. Mrs. Mavis Osei, Fulbrighter & Senior Lecturer, Department of General Art Studies, College of Art and Built Environment, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
•Dr. Dali Osepashvili, Associate Professor, Javakhishvili Tbilisi State University- TSU, Georgia.
•Dr. Suarau Oshunsanya, Lecturer I, University of Ibadan, Nigeria.
•Dr. Marek Osinski, Gardner-Zemke Professor, University of New Mexico, USA.
•Dr. Fatbardha Osmanaga, Lecturer & Chief, Department of Psychology and Social Work, University "Luigj Gurakuqi", Albania.
•Dr. Andrea Paula Osorio Duque, Invited Professor, Accounting Department, Faculty of Economic Sciences, UERJ - Rio de Janeiro State University, Brazil.
•Dr. Iman Osta, Associate Professor, Lebanese American University, Lebanon.
•Ms. Laura Osterweis, Associate Professor, Framingham State University, USA.
•Dr. Godswill.N.G. Osuafor, Postdoctoral Student, North-West University- Mafikeng Campus, South Africa.
•Mr. Michael Osungunna, Lecturer I, Department of Pharmaceutics, Faculty of Pharmacy, Obafemi Awolowo University, Nigeria.
•Dr. Hiba Othman, Chairperson, American University of Science and Technology- Department of Mathematics, Lebanon.
•Mr. Chokri Ouerfelli, Professor, University of Sousse, Tunisia.
•Dr. Alla Ovsyannikova, Researcher, Federal State Budget Institution "Scientific - Research Institute of Therapy and Preventive Medicine”, Russia.
•Mr. Aly Owida, Assistant Lecturer, Arab Academy for Science, Technology and Maritime Transport (AASTMT), Egypt.
•Dr. Timothy Oyebisi, Professor, Obafemi Awolowo University, Nigeria.
•Dr. Godwin Oyedokun, Senior Lecturer in Accounting & Finance, Babcock University & Saint Monica University, Nigeria.
•Dr. David Sunday Oyerinola, Lecturer, Department of Economics, Federal University of Technology Akure, Nigeria.
•Dr. Resat Oyguc, Lecturer, Istanbul Technical University, Turkey.
•Dr. Oritsegbubemi Anthony Oyowe, Lecturer, University of the Western Cape, South Africa.
•Dr. E. Ipek Ozbek Sonmez, Professor, Dokuz Eylul University, Turkey.
•Dr. Ebru Ozeke Tokmeci, Assistant Professor, Mimar Sinan Fine Arts University- Faculty of Architecture, Turkey.
•Ms. Ayla Ozekmekci, Lecturer, Near East University, Turkey.
•Dr. Bugra Ozer, Associate Professor, Celal Bayar University, Turkey.
•Dr. Faruk Ozger, Assistant Professor, Izmir Katip Celebi University, Turkey.
•Ms. Hatice Ozgul Ozhisar, PhD Student, Middle East Technical University, Turkey.
•Dr. Altan Özkil, Assistant Professor & Deputy Director, Civil Aviation Management Dept., Civil Aviation School, Atilim University, Turkey.
•Dr. Fatih Öztürk, Assistant Professor of International Law, Faculty of Law, Melikşah University, Kayseri, Turkey.
•Ms. Kathleen Ann O'Donnell, Freelance Tutor and Transactor & Researcher, British School at Athens, Greece.