The Vitamin D Workshops are international scientific conferences that bring together basic researchers, clinicians and nutrition experts from around the globe. Since the first congress in 1973, there have been 22 Vitamin D Workshops with #23 in planning for August 2020. They host a multi-day forum where the latest research on Vitamin D is presented, debated and shared. The Vitamin D Workshops are open to anyone with an interest in the biology and health implications of Vitamin D. An important outcome of our meeting is publication of a dedicated issue of the Journal of Steroid Biochemistry and Molecular Biology featuring work presented at the conference. Proceedings from past meetings can be accessed under the Annual Conferences tab.