| First Name | Last Name | Institutions | Articles |
|---|---|---|---|
| Michael | Oates | Integrated Environmental Solutions Ltd | 1 |
| Matvey | Oborin | Lomonosov Moscow State University | 1 |
| Stanislav Valerievich | Odintsov | Peoples’ Friendship University of Russia | 1 |
| Anna | Oganesyan | Southern Federal University | 1 |
| Karine | Oganisjana | Riga Technical University | 3 |
| Tsahik | Ohanisian | Dnipropetrovsk State University of Internal Affairs | 1 |
| Alina | Ohotina | Daugavpils University | 4 |
| Hilary Izuchukwu | Okagbue | Covenant University | 2 |
| Aizada | Okanova | Narxoz University | 1 |
| Małgorzata | Okręglicka | Częstochowa University of Technology | 1 |
| Saule | Okutayeva | Astana International University | 2 |
| Eunice Omolola | Olaniyi | Tallinn University of Technology | 5 |
| Iyabo Adeola | Olanrele | Nigerian Institute Of Social And Economic Research | 1 |
| Mária | Oleárová | University of Prešov | 2 |
| Elena | Oleinik | Far Eastern Federal University | 1 |
| Iryna | Oliinyk | National Academy for Public Administration under the President of Ukraine | 1 |
| Marian | Oliński | University of Warmia and Mazury in Olsztyn | 2 |
| Javier | Oliver | Polytechnic University of Valencia | 4 |
| María Dolores | Oliver-Alfonso | University of Seville | 1 |
| Safiah | Omar | University of Malaya | 1 |