Abstract
HIV continues to affect populations made socially vulnerable, including Latinx groups. For Spanish-speaking people, there are additional social factors that increase their vulnerability. How we communicate, mainly language, is fundamental to achieving expected outcomes when implementing health interventions. In this article, we address the issue of language justice and how it has been applied to meet the needs of Spanish-speaking Latinx populations in different locations in the United States when conducting HIV implementation science research. Language justice can inform HIV implementation science research to be inclusive, equitable, and reflective of the diverse populations aimed to serve, ultimately leading to a more just health care system and better health outcomes.