Dominant and mainstream discourse in the US has come to recognize justice as integral to population and individual health. These critical conversations provide a unique opportunity to advocate for justice’s implementation in informatics and allow for articulation of common goals for justice-informed practice. An important first step is collaboratively formalizing definitions, principles, and actions to organize and support methodical future research. Through this workshop we will bring together an interdisciplinary group of stakeholders in biomedical informatics to formalize a working definition of justice informatics (JI), discuss an agenda for future informatics work, and take first strides towards compiling resources to aid JI. Before the workshop, we will crowd-source a preliminary definition of JI from the broader informatics community, and gather information about how bias and oppression impacts daily informatics work. In the first phase of the workshop, we will refine this preliminary definition. In the second phase of the workshop, attendees will work together to articulate, ideate, and develop JI-oriented, actionable agendas for areas of informatics practice, e.g., scholarship (research methods, citational justice), leadership and development (curriculum development, mentorship), and policy. During the third phase of the workshop, participants will collaborate to document key takeaways, compile resources, and develop a toolkit to guide and inform engagement of future research and resource development. These conversations will carry forward through the creation of a community network and the publication of a paper.