Living with dementia requires decision-making about numerous topics including daily activities, such as advance care planning (ACP). Both individuals living with dementia and care partners require informed support for decision-making. We conducted an umbrella review to assess knowledge translation (KT) interventions supporting decision-making for individuals living with dementia and their informal care partners. Four databases were searched using 50 different search-terms, identifying 22 reviews presenting 32 KT interventions. The most common KT decision topic was ACP (N=21) which includes advanced care directives, feeding options, and placement in long-term care. The majority of KT interventions targeted care partners only (N=16), or both care partners and individuals living with dementia (N=13), with fewer interventions (N=3) targeting individuals living with dementia. Overall, our umbrella review offers insights into the beneficial impacts of KT interventions, such as increased knowledge and confidence, and decreased decisional conflicts.