Similar to ブリティッシュ・アンド・アイリッシュ・ライオンズ

OpenCores

OpenDaylight Project

OpenEmbedded

Openmoko

OpenMosix

OpenRC

OpenRefine

OpenServer

OpenShift

OpenSUSE Project

Optics Express

Optics Letters

Orca (assistive technology)

ORCA (quantum chemistry program)

ORCID

OSDN

OW2

PAOK FC

England national rugby union team

England women's national rugby union team

England women's national rugby sevens team

England national rugby sevens team

England national under-20 rugby union team

Ampthill RUFC

West Hartlepool R.F.C.

Waterloo F.C.

Exeter Chiefs