Football Équipes commençant par O
- Orthodox W.
- Oval Invincibles
- Oval Invincibles (W)
- Odzaci (N)
- Olympia FC (Wom)
- Olympic Kingsway SC (N)
- OFK Olimpik Novi Grad Sarajevo
- Oud Heverlee Leuven II
- Oud Heverlee Leuven U23
- Ospitaletto
- OLKS Piast Wroclaw Zerniki
- Olympic Tallinn
- Ouanaminthe FC
- Olympique Lyon 2
- OFK Beograd (N)
- Oliveirense (U 19)
- Orzel Nieborow
- Olympic FC Brisbane Women
- Olstykke (Women)
- OFK Buducnost Dudovica
- OSPA Oulunsalo
- OFK Dorostol 2003 Silistra
- Open Goal Broomhill Glasgow
- Oryol
- Okzhetpes (R)
- Olympie Zdice
- Olde Veste 54
- Oratorio U20
- Olympia FC Warriors (R)
- OKS Ostrow Wielkopolski
- Oriental (Uru)
- Olmos, G/Panova, A
- O Connor Knights FC U23