Constructivism may refer to:
- constructivism (art), a 20th-century artistic movement
- constructivism (international relations)
- constructivism (learning theory), a theory about the nature of learning
- constructivism (mathematics), a philosophical view on mathematical proofs and existence of mathematical objects
- constructivism (psychological school), an approach to psychological research and therapy
- constructivist architecture, an architectural movement in Russia from 1919 onwards
- constructivist epistemology, common meanings and underlying structures of all constructivism
- constructivist teaching methods
- deconstructivism
- neuroconstructivism
- social constructivism, the role of culture and social context for cognitive development