Design theory (disambiguation)

Design theory is a subfield of design research concerned with various theoretical approaches.

Design theory may also refer to:
 * Engineering and industrial design
 * C-K theory
 * Design science
 * C-K theory
 * Mathematics
 * Combinatorial design
 * Block design (including symmetric designs)
 * Design of experiments
 * Architecture
 * Economics
 * Mechanism design
 * Theological argument
 * Intelligent design