Abstract Objective To map the existing literature on the difference in risk factors for undernutrition between indigenous and non-indigenous children younger than 5 years old of Latin America and caribbean. Introduction Compared to non-indigenous children, Indigenous children have a higher risk for undernutrition, however, there are not systematic or scoping reviews identifying this difference through the risk factors. Inclusion criteria Every paper designed to assess directly or indirectly associations between undernutrition and risk factors, also, it must show results where indigenous people had not been aggregated to other races. We excluded every paper that didn’t have a covariate different to ethnicity. Methods This scoping review will use the JBI methodology to search several databases, trial registries, and gray literature for both published and unpublished studies related to malnutrition. Two or more independent reviewers will screen titles and abstracts for inclusion criteria, assess full texts, and extract data using a data extraction tool. Results will be presented as a narrative synthesis with key findings, knowledge gaps, and recommendations. A PRISMA-ScR flow diagram will be included in the final report.