✪ Enduring contributions to implementation science: Honoring the legacy of Bryan R. Garner

With heavy hearts, we are writing to celebrate the scientific contributions of our colleague and friend, Bryan R. Garner, PhD, who passed away incomprehensibly at the age of 49 on June 20, 2025. Bryan was a professor at The Ohio State University, where he served as Director of Dissemination & Implementation Science in the Division of General Internal Medicine and Director of Dissemination & Implementation Research for the Center for the Advancement of Team Science, Analytics, and Systems Thinking (CATALYST). Bryan formed enduring collaborations and friendships across the institutions where he worked and trained. He maintained career-long relationships with colleagues from Texas Christian University, where he earned his PhD in Experimental Psychology (1–3), and from Chestnut Health Systems (4–7) and RTI International (8–10), where he built and expanded his research program.