- Ocean Pearl
- OCR A Level PE (Year 1 and Year 2)
- OCR A Level PE Book 1
- OCR A Level PE Book 2
- OCR A-level Physical Education Student Guide 1: Physiological factors affecting performance
- OCR A-level Physical Education Student Guide 2: Psychological factors affecting performance
- OCR A-level Physical Education Student Guide 3: Socio-cultural issues in physical activity and sport
- Old Man of the Woods
- Ollie and Harry's Marvellous Adventures (International Edition)
- Ollie and Harry's Marvellous Adventures (International Edition)
- Oltre la linea - Viaggio nell'inferno del calcio giovanile
- Olympic Champions
- Olympic Sports
- Olympic Sports - When and How? : History of Olympic Sports Then, Now And Beyond
- Olympic Sports For Kids : Amazing Sports for Children Of All Ages
- Olympisk kandidat
- On a Starry Night