Gerard Unger (born 22 January 1942, Arnhem) is a Dutch graphic and type designer. He studied at the Gerrit Rietveld Academie in Amsterdam from 1963–67, and subsequently worked at Total Design, Prad and Joh. Enschedé. In 1975, he established himself as an independent developer. A long-time guest lecturer at the University of Reading, he has mentored many modern typeface designers. He lives and works in Bussum, Netherlands.

Theory of Type Design, by internationally renowned Dutch graphic designer and typographer Gerard Unger (born 1942), is the first complete and accessible theory of the breathtakingly varied field of typography. "Of all designed objects letters are probably the most pervasive," as Unger explains at the beginning of his study. "Very familiar yet amazingly diverse in their appearance … there seems to be no limit to human ingenuity when it comes to varying letterforms."

Unger approaches the diversity and creativity of the field with a wide-ranging, reflective, critical theory of how we design and make sense of text. The history of typography is surveyed, from cuneiform script to Wim Crouwel's New Alphabet and today's digital developments, and explored in relation to how our eyes and brain process various letter shapes in order to understand text.

This volume consists of 24 concise chapters, each clearly describing a different aspect of type design (from practical considerations like spacing and rhythm, legibility, size and italics to more ineffable considerations like personality and preference). This theoretical material is illuminated by more than 200 illustrations and practical examples, and an extensive glossary succinctly explains terminology and key ideas.

Internationally oriented, and taking into consideration the past, present and future of typography, Theory of Type Design will be an indispensible resource for graphic design students, professionals, and those with a general interest in text and printed matter.