This book constitutes the revised selected papers of the 19th International Conference on Formalizing Natural Languages: Applications to Natural Language Processing and Digital Humanities, NooJ 2025, held in Paris, France, during June 11&13, 2025. The 17 full papers included in this book were carefully reviewed and selected from 47 submissions. These papers were organized under the following topical sections: Lexical and Morphological Resources; Syntactic and Semantic Resources and Natural Language Processing Applications.