Latina/os are heterogeneous, originating from over 25 countries in the Caribbean and Central and South America. Each ethnic group has a unique sociopolitical history, as well as different demographic, socioeconomic, and settlement patterns that contribute to ethnic variations in initial health outcomes and health trajectories over time. Despite the substantial heterogeneity, Latina/os are often treated as a monolithic group in national and state surveillance health surveys. The primary aim of this project is to identify barriers and facilitators that either prevent or promote collection of disaggregated surveillance health data on U.S. Latina/os. A secondary aim is to review exemplars of disaggregated surveillance health surveys to identify promising measures, approaches, and techniques.