Creep Literature Knowledge Graph (CreepLitKG) is an LLM+Ontology-driven pipeline and knowledge graph, that converts creep test metadata extracted from scientific literature into ontology-grounded RDF. It makes experimental creep data reported in publications — material identity, chemical composition, heat treatment history, microstructural features, test conditions, and creep results — findable, machine-readable, and queryable through a public SPARQL endpoint, and federates it into the MatWerk Knowledge Graph (MSE-KG).