Lacanian Discourse Analysis (LDA) is an approach to the analysis of language, text, and subjectivity in psychological research drawing on the psychoanalytic theory of Jacques Lacan. Emerging within critical discursive psychology in the early 2000s, LDA treats discourse not as the medium through which pre-formed subjects express meanings, but as the condition through which subjects are constituted, divided, and spoken. The approach is grounded in Lacan’s account of the unconscious as structured like a language, his tripartite symbolic, imaginary, and real orders, his theory of the signifier and the split subject, and his theory of the four discourses—master, university, hysteric, and analyst—alongside the later capitalist discourse. LDA is anti-methodological in a procedural sense, refusing fixed coding grids in favor of conceptual coordinates configured for the singularity of each analysis. The entry outlines LDA’s theoretical foundations, key elements, debates, and applications.