Orga - pain
- organ
- organ for the administration of justice
- organised football
- Organising Committee for the FIFA Club World Championship
- Organising Committee for the FIFA Confederations Cup
- Organising Committee for the FIFA World Cup
- Organising Committee for the FIFA World Youth Championships
- Organising Committee for the Olympic Football Tournaments
- orientation ability
- orthopaedic surgeon
- orthopaedics
- out-of-competition control
- outer malleolus
- outer seam
- outfield player
- outmanoeuvre
- outnumber
