The following is a metadata subcollection on European theatre pieces and theatre groups involving performers with cognitive disabilities. This collection was compiled between 2020 and 2023 as part of the project “Erzählung, Erwartung, Erfahrung. Behinderung im zeitgenössischen europäischen Theater und Film” (EEE) or “Narrative, Expectation, and Experience: Disability in Contemporary European Theatre and Film,” which was funded by the German Research Foundation DFG (Deutsche Forschungsgemeinschaft; project number 429281822) and directed by Prof. Dr. Susanne Hartwig of the University of Passau in Germany. The data collection was coordinated by Dr. Soledad Pereyra, University of Passau.