This book constitutes the refereed proceedings of the 14th International Joint Conference on Knowledge Graphs, IJCKG 2025, held in Heraklion, Crete, Greece, during October 15–17, 2025.

The 28 full papers and 11 short papers included in this book were carefully reviewed and selected from 74 submissions. The papers focus on innovative research results and novel applications of Knowledge Graphs, Semantic Web, Linked Data, and AI. They are organized in the following sections: Main track, Education track, In-use track, Posters and demos, Workshop papers, and Evaluation challenge.