Genomic healthcare applications have relevance to all healthcare professionals including nursing, and most evidence-based clinical applications impact the quality and safety of healthcare. To guide nursing genomic competency initiatives, the Essential Nursing Competencies and Curricula Guidelines for Genetics and Genomics were established through a process of consensus in 2005. A 2009 update incorporated outcome indicators consisting of specific areas of knowledge and clinical performance indicators, to help support academic integration. Almost 20 years have elapsed since these competencies were first established, yet incorporating the competencies into general and specialty scope and standards of nursing practice is inconsistent, competency integration into curricula is highly uneven, continuing education in genomics for nurses is limited, and the genomic capacity of the nursing workforce remains low. These deficits have persisted despite substantial advances in genomic technology which substantially reduced costs and increased evidence-based clinical applications, including direct to consumer genomic tests, the integration of genomics into evidence-based guidelines, and evidence that genomics impacts the quality and safety of healthcare. The aim of this project was to update and achieve consensus on genomic competencies applicable to all registered nurses. This was a mixed methods study. The update to the competencies was performed based first on a literature review to update the competencies based on the current state of the evidence. Using the updated content, a modified Delphi study was conducted with registered nurse panelists from clinical, academic, and research settings. Once consensus was achieved, the competencies were made available through the American Nurses Association for public comment. Public comments were then reviewed and integrated as needed. The literature review resulted in a transition from genetics to genomics, given the reduction in costs, which resulted in an expansion of the scope of testing in both the germline and somatic contexts. Two Delphi rounds were required to reach consensus prior to the public comment period. Public comments were solicited through the American Nurses Association, and each comment was reviewed by the authors and addressed as indicated. The Essentials of Genomic Nursing: Competencies and Outcome Indicators constitute the minimum competency in genomics required of all registered nurses regardless of the level of academic training, role, or specialty. Evidence-based genomic applications span the entire healthcare continuum and, therefore, are relevant for all registered nurses regardless of academic training, role, practice setting, or clinical expertise. These competencies serve as the guide for the minimum requirements for registered nurse practice as well as guide curricula and continuing education for all registered nurses, including but not limited to administrators, educators, nursing leaders, practicing nurses, and researchers.