For tribal nations, effective data systems are critical to report progress to funders and support governance and sovereignty. As demonstrated through the Tribal Maternal, Infant, and Early Childhood Home Visiting Program (the Tribal Home Visiting Program), federal agencies can provide American Indian and Alaska Native (AI/AN) programs with innovative technical assistance (TA) and resources to strengthen data systems in furtherance of indigenous data sovereignty. To explain how the Administration for Children and Families (ACF) has supported Tribal Home Visiting grantees in addressing data system challenges, this brief presents the following: An overview of data system challenges and needs for tribal programs; A summary of data system TA and resources provided to Tribal Home Visiting grantees; Case studies of the ways TA support improved data system capacity; Recommendations for providing data system TA unique to tribal programs. (author abstract)