Background: Resilience, a capacity for addressing, recovering, and growing from challenging situations, can mitigate dementia care partners’ burden. Three main theoretical models predominate, treating resilience variably as an outcome, a trait, or a process. Objectives: In this scoping review, we examine how these three models inform definitions and measures of resilience in dementia care partners to understand whether there is a single coherent model and identify the gaps in conceptualizing and operationalizing resilience. Methods: We searched English-language peer-reviewed articles (January 1991–June 2019) that contained definitions and/or measures of resilience developed for or used with dementia care partners. Data were analyzed using content analysis. Results: We found that perspectives from the three existing theoretical models can be integrated into a unified framework for the study of resilience in dementia care partners. However, major gaps remain in operationalizing resilience for research due to a paucity of resilience outcomes and knowledge about resilience-related behaviors.