- Odomaro Mubangizi and Vick L. Ssali
- Odora-Obote Alex
- Oduor Ong'wen
- Office of the Legal Counsel of the African Union
- Office of the United Nations High Commisssioner for Human Rights
- Ogou Bastien
- Ogunjimi James Taiwo
- Oil in Uganda
- Oilwatch Africa
- Okachikwu Dibia
- Okello Oculi
- Okeoma Ibe
- Okeoma Ndidi Ibe
- Okiya Omtatah Okoiti
- Okodili Ndidi
- Okoth Osewe
- Okumephuna Chukwunwike
- Okwa Morphy Enebeli
- Ola Shahba
- Oladele Oluwasogo
- Olaide Gbadamosi
- Olajide Olagunju
- Oliver Bakewel, Jerry Adams and Brian Pratt
- Oliver Burkeman
- Oliver Kearns
- Oliver Meth
- Oliver Meth and Dan Moshenberg
- Oliver Meth and Gerard Boyce
- Oliver Sagna
- Oliver Stuenkel
