This book constitutes the proceedings of the 19th Annual Conference on Theory and Applications of Models of Computation, TAMC 2025, which was held in Jinan, China, during September 19–21, 2025.The 32 papers included in these proceedings were carefully reviewed and selected from 71 submissions. They were organized in topical sections as follows: Computational Complexity and Algorithms; Models of Computation; Logic and Proof Theory; Algorithmic Game Theory; Parallel and Distributed Computing; Computational Geometry and Graph Theory; Combinatorial Optimization; Parameterized Algorithms; Continuous Optimization and Lattice Optimization.

This book constitutes the proceedings of the 19th Annual Conference on Theory and Applications of Models of Computation, TAMC 2025, which was held in Jinan, China, during September 19–21, 2025.The 32 papers included in these proceedings were carefully reviewed and selected from 71 submissions. They were organized in topical sections as follows: Computational Complexity and Algorithms; Models of Computation; Logic and Proof Theory; Algorithmic Game Theory; Parallel and Distributed Computing; Computational Geometry and Graph Theory; Combinatorial Optimization; Parameterized Algorithms; Continuous Optimization and Lattice Optimization.