Omicron Kappa Upsilon (ΟΚΥ) is a national honorary society serving the field of dentistry.
The Society originated with the 1914 graduating class of the dental school at Northwestern University in Chicago.
Several dental schools have shuttered over the years, resulting in the cessation of active chapters on those campuses.
Membership is conferred in a two-step process, first by the student's attainment within the top 20% of a school's graduating class, then by a faculty vote based on qualities including character, service, research, etc.
It features prominently on graduation stoles for students and faculty within the field, and is used as the primary color for ΟΚΥ materials and publications.