Multi-Priority Graph Sparsification -- Point Enclosure Problem for Homothetic Polygons -- Hardness of Balanced Mobiles -- Burn and Win -- Min-Max Relative Regret for Scheduling to Minimize Maximum Lateness -- Advice Complexity Bounds for Online Delayed F-Node-, H-Node- and H-Edge-Deletion Problems -- Parameterized algorithms for Eccentricity Shortest Path Problem -- A Polynomial-Time Approximation Scheme for Thief Orienteering on Directed Acyclic Graphs -- Deterministic Performance Guarantees for Bidirectional BFS on Real-World Networks -- A Polyhedral Perspective on Tropical Convolutions -- Online Knapsack with Removal and Recourse -- Minimum Surgical Probing with Convexity Constraints -- A linear algorithm for radio k-coloring powers of paths having small diameter -- Capacity-Preserving Subgraphs of Directed Flow Networks -- Timeline Cover in Temporal Graphs: Exact and Approximation Algorithms -- Finding Small CompleteSubgraphs Efficiently -- Maximal distortion of geodesic diameters in polygonal domains -- On 2-strong connectivity orientations of mixed graphs and related problems -- Make a Graph Singly Connected By Edge Orientations -- Computing the Center of Uncertain Points on Cactus Graphs -- Cosecure Domination: Hardness Results and Algorithms -- Optimal cost-based allocations under two-sided preferences -- Generating cyclic rotation Gray codes for stamp foldings and semi-meanders -- On Computing Large Temporal (Unilateral) Connected Components -- On Integer Linear Programs for Treewidth based on Perfect Elimination Orderings -- Finding Perfect Matching Cuts Faster -- Connected Feedback Vertex Set on AT-Free graphs -- Reconfiguration and Enumeration of Optimal Cyclic Ladder Lotteries -- Improved Analysis of two Algorithms for Min-Weighted Sum Bin Packing -- Sorting and Ranking of Self-Delimiting Numbers with Applications to Tree Isomorphism -- A Linear Delay Algorithm for Enumeration of 2-Edge/Vertex-connected Induced Subgraphs -- Partial-Adaptive Submodular Maximization -- Budget-Constrained Cost-Covering Job Assignment for a Total Contribution-Maximizing Platform.

This book constitutes the refereed proceedings of the 34th International Workshop on Combinatorial Algorithms, IWOCA 2023, held in Tainan, Taiwan, during June 7-10, 2023. The 33 full papers included in this book were carefully reviewed and selected from 86 submissions. They were organized in topical sections as follows: algorithms and data structures; algorithmic and combinatorical aspects of cryptography and information security; algorithmic game theory and complexity of games; approximation algorithms; complexity theory; combinatorics and graph theory; combinatorial generation, enumeration and counting; combinatorial optimization; combinatorics of words; computational biology; computational geometry; decompositions and combinatorial designs; distributed and network algorithms; experimental combinatorics; fine-grained complexity; graph algorithms and modelling with graphs; graph drawing and graph labelling; network theoryand temporal graphs; quantum computing and algorithms for quantum computers; online algorithms; parameterized and exact algorithms; probabilistic and randomized algorithms; and streaming algorithms.