He was born in Arnhem, Netherlands. He worked at Total Design, Prad and Joh. Enschedé. In 1975, he became an independent developer. He was a long-time guest lecturer at the University of Reading, he mentored many modern typeface designers.
- Walters, John L. "Reputations: Gerard Unger". Eye. Retrieved 19 October 2017.
- "Gerard Unger Wins 2009 SOTA Typography Award". Microsoft Typography. Retrieved 19 October 2017.
- Letterontwerper en bedenker Volkskrant-letter Gerard Unger (76) overleden (in Dutch)