This book constitutes the refereed proceedings of the 33rd International Static Analysis Symposium, SAS 2026, held in Oakland, CA, USA, during October 6–8, 2026.

The 20 papers included here were carefully reviewed and selected from 43 submissions. They focus on abstract interpretation, automated deduction, data flow analysis, debugging techniques, deductive methods, emerging applications, model checking, data science, program optimizations and transformations, program synthesis, program verification, machine learning and verification, security analysis, tool environments and architectures, theoretical frameworks, type checking, distributed or networked systems, and LLM for static analysis and static analysis for LLM.