List of authors - O
- O'Brien, Derry
- O'Brien, Edward J.
- O'Reilly, Gerard
- O'Toole, Conor
- O’Brien, Derry
- O’Brien, Edward
- O’Donnell, Seamus
- O’Grady, Michael
- Obreja, Iulian
- Oeking, Anne
- Office, Publications
- Office, Publications
- Ogaki, Ryota
- Ohlsson, Henry
- Ojea Ferreiro, Javier
- Oláh, Zsolt
- Oliveira-Soares, Rodrigo
- Olsson, Hans
- Onali, Enrico
- Onatski, Alexei
- Oneto, Giampaolo
- Ongena, Hedwig
- Ongena, Steven
- Onorante, Luca
- Opricǎ, Silviu
- Opromolla, Luca David
- Orlandi, Fabrice
- Oropallo, Filippo
- Orphanides, Athanasios
- Örs, Evren
- Orszaghova, Lucia
- Ortega, Eva
- Ortega, Manuel
- Osbat, Chiara
- Osborn, Denise R
- Osier, Guillaume
- Osiewicz, Małgorzata
- Ostergaard, Charlotte
- Ostrovskis, Gundars
- Ota, Tomohiro
- Otsuka, Misuzu
- Ottaviano, Gianmarco I.P.
- Ozhan, Galip Kemal
- Ozsahin, Selcuk
- Öztürk, Bahar
- Özyurt, Selin