O

Ocean Sans Std

Chong Wah, Monotype Corp.

Ocean Sans Std SemiExtended

Chong Wah, Monotype Corp.

Ocean Sans Std Extended

Chong Wah, Monotype Corp.

OCR-A Std

American Type Founders Staff

OCR-B Std

Adrian Frutiger

Octavian Std

Will Carter and David Kindersley, Monotype Corp.

ITC Officina Sans Std

Erik Spiekermann, ITC

ITC Officina Serif Std

Erik Spiekermann, ITC

Old Claude Std

Paul Shaw, LetterPerfect

Monotype Old Style Std

Unknown, Monotype Typography Ltd.

Old Style 7 Std

Unknown

Olympian Std

Matthew Carter, Linotype Library GmbH

Omnia Std

Karlgeorg Hoefer, Linotype Library GmbH

Ondine Std

Adrian Frutiger, Linotype Library GmbH

Onyx Std

Gerry Powell, Monotype Corp.

Optima Std

Hermann Zapf, Linotype Library GmbH

Orator Std

John Scheppler

Orgánica Std

Gabriel Martínez Meave

Origami Std

Carl Crossgrove

Ouch! Std

Joachim Müller-Lancé, Adobe Systems

Oxford Std

Arthur Baker, AlphaOmega Typography

ITC Ozwald Std

David Farey, ITC