Background The number of people with intellectual disability and dementia increases; this combination causes behavioural changes. Dementia Care Mapping (DCM) supports staff in dementia care in nursing homes and may be useful in intellectual disability‐care. This qualitative study examines the feasibility of DCM for older people with intellectual disability and dementia. Methods The present authors obtained data in focus groups and interviews with professional users and analysed using a framework for feasibility studies. With experts in dementia and intellectual disability researches, the present authors determined the overall feasibility. Results DCM was found to be feasible in intellectual disability‐care, regarding five domains of feasibility. Staff reported DCM to be useful and valuable and addresses to their demand for skills and knowledge. All professional users found DCM feasible in intellectual disability‐care, which was confirmed by experts. Conclusions DCM is feasible in intellectual disability‐care. When fully tailored to intellectual disability‐care, DCM is useful and provides opportunities to assess its effectiveness.

DCM tailored to ID-care proved to be an appropriate and valuable method to support staff in their work with aging clients, and it allows for further implementation. This is a first step to obtain an evidence-based method in ID-care for older clients.