Obando Peralta, Ena Cecilia , Universidad Privada del Norte
Obushna, Nataliia , Taras Shevchenko National University of Kyiv, Ukraine.
Ochoa, Édixon , Academia de Historia del estado Zulia
Ochoa, Edixon, Academia de Historia del Zulia / Universidad del Zulia
Ochoa, Édixon, Unidad curricular electiva Sexología Médica. Cátedra de Psicología Médica. Departamento de Ciencias de la Conducta. Unidad curricular Orientación II. Centro de Orientación “Dra. Consuelo Faría” (COFAMED). Escuela de Medicina. Facultad de Medicina. Universidad del Zulia (LUZ).
Ochoa, Edixon, Universidad del Zulia
Ochoa-Barrientos, Édixon , Universidad del Zulia, Maracaibo, Venezuela.
Ochoa-Rico, María-Salomé , Universidad de Córdoba, Córdoba, España.
Odar Puse, Marco Antonio , Universidad Nacional de San Cristóbal de Huamanga, Ayacucho, Perú.
Odar Rojas, Cintya Elisabeth , Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas
Ohiienko, Mykola , Applied Sciences University of Management and Administration in Opole, Opole, Poland.
Olefir, Viktor, National Academy of Law of Ukraine
Oleksenko , Karina , Dmytro Motornyi Tavria State Agrotechnological University
Oleksenko, Karina , Berdiansk State Pedagogical University, Zaporizhzhia, Ukraine.
Oleksenko, Roman , Dmytro Motornyi Tavria State Agrotechnological University
Oleksenko, Roman , Dmytro Motornyi Tavria State Agrotechnological University, Melitopol, Ukraine.
Oleksenko, Roman , Dmytro Motornyi Tavria State Agrotechnological University, Zaporizhizhya, Ukraine.
Oleksenko, Roman , Dmytro Motornyi Tavria State Agrotechnological University, Zaporizhzhia, Ukraine.
Oleksenko, Roman , Dmytro Motornyi Tavria State Agrotechnological University, Zaporizhzhia, Ukraine. 
Oleksenko, Roman , Volodymyr Vynnychenko Central Ukrainian State University, Kropyvnytskyi, Ukraine.
Oleksenko, Volodymyr , Dnipropetrovsk State University of Internal Affairs, Ukraine.
Olena, Holodaieva , International European University, Ukraine.
Olena, Larycheva , Petro Mohyla Black Sea National University, Ukraine.
Oleynik, Pavel , Moscow State University of Civil Engineering, Moscow, Russia.
Oleynikova , Tatyana Anatolievna , Department of “Management and Economics of Pharmacy” Kursk State Medical University Kursk, Russia.
Olha, Tsviakh , V.O. Sukhomlynskyi Mykolaiv National University, Ukraine.
Oliinyk, Iryna , Alfred Nobel University, Dnipro, Ukraine.
Oliinyk, Mykhailo , Zaporizhzhia State Medical and Pharmaceutical University, Ukraine.
Oliva, Manuel , Universidad Nacional Toribio Rodríguez de Mendoza
Oliva Cruz, Segundo Manuel, Instituto de Investigación para el Desarrollo sustentable de Ceja de Selva INDES-CES, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Perú.
Oliva Hernández, Amanda Alejandra , Instituto Politécnico Nacional, Tamaulipas, México.
Oliva Núñez, Juan Manuel , Office of Research, Innovation and Entrepreneurship of the Alas Peruanas University, Piura.
Oliva-Hernández, Amanda , Instituto Politécnico Nacional, Reynosa, Tamaulipas, México.
Oliva-Núñez, Juan Manuel, Universidad Alas Peruanas, Piura; Universidad Alas Peruanas, Perú – filial Piura
Oliveros, Mary, Hospital Universitario de Maracaibo
Oliveros Chaparro, César Jesús, Universidad del Zulia
Ollague-Valarezo, José Kennedy , Technical University of Machala – Ecuador
Omelchenko, Andrii , Kyiv National Economic University named after Vadym Hetman. Ukraine.
Omelyanenko, Sofiya Yu., Vladivostok State University of Economics and Service
Oneshko, Svitlana , Odessa National Maritime University
Onyschuk, Iryna , Kremenets Regional Humanitarian Pedagogical Institute named after Taras Shevchenko, Ukraine.
Opanova, Z., Autonomous Educational Organization "Nazarbayev Intellectual Schools".
Ordóñez, Claudio, Universidad del Zulia
Ordóñez-Barberán, Plutarco Severo , Unidad Educativa Ciudad de Machala, Ecuador.
Orekhov, Serhii, Department of International Law and Comparative Law of Kyiv International University
Orlova, Aleksandra S., Sechenov First Moscow State Medical University (Sechenov University) Moscow, Russia
Ormaza Esmeraldas, Elizabeth del Carmen , Universidad Laica Eloy Alfaro
Ortega, Sheila , Universidad del Zulia, Maracaibo, Venezuela.
Ortega, Sheila , Universidad del Zulia, Maracaibo-Venezuela
Ortega, Sheila , University of Zulia, Venezuela.
Ortega, Bertha N., Universidad del Zulia
Ortega, Jorge, Universidad del Zulia
Ortega, Pablo, Universidad del Zulia
Ortega, Pablo, Universidad del Zulia-Venezuela
Ortega, Sheila, Universidad del Zulia
Ortega Moreno, Sheila, Universidad del Zulia
Ortín de Medina, Nevi, Universidad del Zulia-Venezuela
Ortiz, Enio, Universidad Simón Bolívar
Ortiz Ortiz, Emanuel, Universidad Nacional de Piura. Perú
Ortiz Ortiz, Emanuel, Universidad Nacional de Piura. Perú.
Ortiz Valenzuela, Enio, Universidad Simón Bolívar
Osadchenko, Tetiana , Pavlo Tychyna Uman State Pedagogical University, Ukraine.
Oshurkevych-Pankivska, Oksana , Ukrainian National Forestry University, Lviv, Ukraine.
Osipov, Vitalii , Kremenchuk Humanitarian and Technological Academy, Kremenchuk, Ukraine.
Osorio, Alejandro, Universidad del Zulia
Ostaev , Gamlet Y. , Izhevsk State Agricultural Academy
Ostaev, Gamlet Y. , Izhevsk State Agricultural Academy
Ostaev, Gamlet Y., Izhevsk State Agricultural Academy, 426069, Izhevsk, Studencheskaya
Ostos, Jhony, Facultad de Ciencias Económicas y Administrativas, Universidad Esan, Lima, Perú
Ostrovska, Marianna , Department of Pedagogy and Psychology, Ferenc Rakoczi II Transcarpathian Hungarian College of Higher Education, Berehovo, Ukraine
Ostrovska, Natalia , Yuriy Fedkovych Chernivtsi National University, Ukraine.
Ovod , Alla Ivanovna , Department of “Management and economics of pharmacy” Kursk State Medical University Kursk, Russia
Ovod, Alla Ivanovna, Department of Management and Economics of Pharmacy, Kursk State Medical University of the Ministry of Health of the Russian Federation,
Ozarko, Kateryna , State University of Intellectual Technologies and Communications, Odesa, Ukraine.
Öznacar, Behcet, Near East University

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