The 2024 conference was a great success. Planning is underway for 2026 - stay tuned! The 21st International Diffuse and Reflectance Conference will be held from July 27- 30, 2026 in Knoxville, Tennessee, USA. This will be hosted by The University of Tennessee and all sessions will be conducted on the Agriculture Campus. We will be utilizing state of the art facilities of meeting rooms, lecture halls, classrooms, and spectroscopy laboratories to enhance your experience while visiting and attending this event.