While nurses bear the primary responsibility for pressure injury prevention, engaging patients and their families in multi-disciplinary strategies is crucial to reducing this significant healthcare burden. Pressure injuries not only complicate hospital stays but also pose substantial challenges and economic strain on patients and their families post-discharge, particularly for vulnerable populations. The financial impact is considerable, costing healthcare systems billions annually and contributing to increased patient suffering, prolonged hospitalizations, and diminished quality of life, even leading to fatal infections. High prevalence rates, such as the 57% reported in northern Nigeria, further underscore the urgency of effective prevention strategies. Despite nurses' pivotal role in education and prevention, barriers like understaffing and resource limitations hinder their efforts. The evolution towards family-centred care (FCC), recognizing families as integral partners in the healthcare team, presents a significant opportunity to enhance pressure injury prevention. This partnership acknowledges that family members, often the primary caregivers, can significantly influence prevention, especially for older adults at home. In fact, studies suggest that empowering families could substantially reduce pressure injury prevalence. However, family caregivers often report a lack of education and specific programs to support their involvement. Although family involvement in healthcare decision-making is recognized, particularly in African communities, and their potential to enhance pressure injury prevention is acknowledged, the specific role and extent of their involvement remain poorly defined, especially within the Nigerian context. Existing literature on pressure injury prevention and quality improvement often lacks a clear specification of the family's role. While some research touches on caregiver training and home-based care, comprehensive reviews specifically examining the evidence for family involvement in pressure injury prevention are scarce, and prior reviews have limitations in scope or currency. A Spanish research team also highlighted the importance of family involvement, noting that patients are often primarily cared for by family members, yet their role in healthcare remains poorly defined. This underscores the critical need for a thorough review of existing evidence on family involvement in pressure injury prevention, examining the nature and potential impact of this involvement on pressure injury prevalence. Recognizing the potential for family engagement to improve pressure injury prevention and address the existing gap in synthesized evidence, this scoping review aims to systematically explore the available literature on family involvement in preventing pressure injuries. Specifically, it will identify the nature and extent of family involvement, effective strategies, potential barriers, and facilitators for family participation in pressure injury prevention within adult acute and home care settings, thereby contributing to enhanced patient care and advancing nursing practice.