Background: Latinx and American Indians experience high rates of chronic health conditions. Family members play a significant role as informal caregivers for loved ones with chronic conditions and both patients and family caregivers report poor psychosocial outcomes. Objectives and Methods: This systematic review synthesizes published studies about psychosocial interventions for Latinx and American Indian care dyads to determine: (i) the benefits of these interventions; (ii) their distinguishing features or adaptations, and; (iii) recommendations for future intervention development. Findings: Out of 366 records identified, seven studies met inclusion criteria. Interventions demonstrated benefits to outcomes such as disease knowledge, caregiver self-efficacy and burden, patient and caregiver well-being, symptom distress, anxiety and depression, and dyadic communication. Distinguishing features included tailoring to cultural values, beliefs, and delivery preferences, participants’ level of acculturation, and population-specific issues such as migratory stressors and support networks. Conclusions: Based upon this review, six recommendations for future intervention development are put forth.