Background: Worldwide, patient and public involvement (PPI) in health research has grown steadily in recent decades. The James Lind Alliance (JLA) is one approach to PPI that brings patients, carers and clinicians together to identify priorities for future research in a Priority Setting Partnership (PSP). Our study aim was to describe the reflections of informal carers of people with dementia on the possibility of participating in the JLA's PSP process, for both themselves and the recipients of their care.