This article provides an overview of the process, development, and evaluation of the Symptom Science Colloquium sponsored by the National Institute of Nursing Research, Oncology Nursing Society (ONS), and National Cancer Institute. This colloquium was the first of its kind to leverage the common goals of these institutes to advance oncology symptom science. Specifically, this article will identify the goals of the agencies involved and synergy in forming this collaboration, review the ONS Research Agenda that provided the blueprint for the colloquium, and offer insights and lessons learned to be used for future planning. The colloquium engaged roughly 500 participants from all levels of clinical (RNs, advanced practice nurses), educational (undergraduate, master’s, doctorate), and research (students, faculty, scientists) expertise. Six featured expert speakers and 115 poster presentations focused on the latest research in symptom science, cancer survivorship, palliative and end-of-life care, and hot topics (COVID-19, health disparities). Fourteen networking sessions fostered opportunities to engage with international experts. Special awards emphasized mentee–mentor relationships and exemplary midcareer faculty. Based on this emphasis, the authors provide themes from the successful award applications as exemplars. A summary of participant satisfaction and recommendations for future collaborations to enhance and advance oncology symptom science are provided.