Staff members, and their attitudes, are crucial for providing person-centered care in residential care facilities for people with dementia. However, the literature on the attitudes of nursing staff regarding person-centered care is limited. The objective of this study is to explore the association between staff characteristics (age, education level, years of work experience and function, i.e., care or welfare) and staff attitudes toward perceived person-centered care provision and including informal caregivers in the caregiving process in residential care facilities.