| ojha.narayan | Nepal | ojha.narayan@gmail.com | balephi hydropower limited | Yes
|
| okc2023 | China | 12032354@mail.sustech.edu.cn | Peking University | Yes
|
| oldenk | United States of America | kim.oldenborg@gmail.com | | Yes
|
| Olgazzz | Germany | olga.serova@uni-jena.de | Friedrich Schiller Universität | Yes
|
| Olicity | China | 986737856@qq.com | Tsinghua University | Yes
|
| Olirti | United Kingdom | olirti@bas.ac.uk | British Antarctic Survey | Yes
|
| olivamartin | United Kingdom | olivamartin@yahoo.es | personal | Yes
|
| olivierv | United Kingdom | olivier.vardakoulias@neweconomics.org | New Economics Foundation | Yes
|
| Olivvv | Estonia | sloune76@bk.ru | -- | Yes
|
| oliya | Nepal | balkumarioliya1@gmail.com | CDB TU | Yes
|