The Department of Astrophysical Sciences at Princeton University has joined the WIYN Observatory as an Operational Partner.  WIYN operates a 3.5-meter diameter optical telescope on the summit of Kitt Peak in the Tohono O'odham Nation outside of Tucson, Arizona, and Princeton astronomers will be granted about 30 nights of observing time each year.  The WIYN telescope is known for its superb instrumentation, including wide-field imaging capabilities and highly precise stellar radial velocity measurements with the NEID spectrograph.  The access to WIYN is in addition to Princeton’s share of observing time on the Magellan telescopes at Las Campanas Observatory in the Chilean Andes, as well as partnerships on a variety of other major observational facilities, such as the Subaru Telescope on the summit of Maunakea in Hawaii, the HATPI wide-field imager at Las Campanas, and the Simons Observatory in Chile. We look forward to many exciting results using the WIYN telescope by students and researchers at Princeton!