Introduction The involvement of older adults as active partners in research is increasingly being promoted to improve the relevance and impact of scientific knowledge. However, the evidence base on how older adults have been involved as active partners in healthcare research remains fragmented. To our knowledge, no review of reviews has yet provided a comprehensive overview of this body of evidence. Therefore, this umbrella review aims to synthesise review-level evidence on the involvement of older adults as active research partners. We address three questions: (1) How have older adults been involved as active partners in research? (2) What terminology, models and frameworks have been used? (3) What benefits and challenges have been reported related to involving older adults as active partners in research?

Methods and analysis This study will follow the Joanna Briggs Institute (JBI) methodology for umbrella reviews. A comprehensive search will be conducted in Medline, CINAHL, Scopus, PsycINFO, Sociological Abstracts and Web of Science. Eligible reviews will be those reporting on the involvement of older adults (aged 60 years or older) as active partners in research. Two reviewers will independently screen titles, abstracts and full texts and perform data extraction using a standardised form. Methodological quality will be assessed using the JBI Critical Appraisal Checklist for Systematic Reviews. Findings will be synthesised narratively and thematically, with attention to reported roles, terminology, conceptual frameworks and the benefits and challenges of involvement.

Ethics and dissemination As this umbrella review draws exclusively on secondary data from published sources, ethical approval is not required. Older adults, engaged as independent public contributors, have been involved in shaping the review protocol and will take part in interpreting the findings. Results will be disseminated through a peer-reviewed journal and presentations at academic and stakeholder conferences, and used to inform the design of a subsequent mixed-methods study focused on strengthening the involvement of older adults as active partners in research.

PROSPERO registration number CRD420251064947.