| First Name | Last Name | Institutions | Articles |
|---|---|---|---|
| Olha | Prokopenko | Tallinn University of Technology | 1 |
| Olga Vadimirovna | Protopopova | Peoples’ Friendship University of Russia | 1 |
| Ona Gražina | Rakauskienė | Mykolas Romeris University | 2 |
| Olena | Rayevnyeva | Bratislava University of Economics and Management | 2 |
| Olga V. | Rogach | Russian State Social University | 1 |
| Oľga | Roháčiková | Slovak University of Agriculture in Nitra | 1 |
| Olexandr | Rozhko | Taras Shevchenko National University of Kyiv | 1 |
| Orlando Lima | Rua | Polytechnic Institute of Porto; University of Beira Interior; Center for Organisational and Social Studies of the Polytechnic of Porto (CEOS.PP) |
2 |
| Oksana | Ruža | Daugavpils University | 19 |
| Oleg | Rybalkin | Daugavpils University | 6 |
| Oksana V. | Savchina | Peoples’ Friendship University of Russia | 1 |
| Olga V. | Savinova | I.M. Sechenov First Moscow State Medical University | 1 |
| Oleksandr | Shmatko | National Technical University "Kharkiv Polytechnic Institute" | 1 |
| Oksana Viktorovna | Shumakova | Omsk State Agrarian University after P.A. Stolypin | 1 |
| Oleksii | Shumilo | Kharkiv National University of Internal Affairs | 1 |
| Olga A. | Shvetsova | Korea University of Technology and Education | 1 |
| Oleksandr | Snigerov | National Scientific Centre "Hon. Prof. M.S. Bokarius Forensic Science Institute" | 1 |
| Olga | Soboleva | Pan-European University | 1 |
| Olga | Starineca | University of Latvia | 1 |
| Oleksandra | Stoian | Petro Mohyla Black Sea State University | 1 |