o で始まるロゴ

OKI

Oncor

OeAMTC

Open Source

Origin

Orafol

Open Source Hardware

Oscar Health

Oneok

Obey the Giant

Oxfam

Obituary

OMV

Office Depot

Onesignal

Okex

OVO

Ohio Flag

Origami

Omron

Oriflame

Oman Air

Okuma

ORIS

Orbit

Opera

Owens Corning

OpenSUSE

Oakland Athletics

Obey the Giant

Orangina

OnePlus