Cathy R. Silak (born May 25, 1950) is the former dean of the Concordia University School of Law in Boise, Idaho. She is a former justice of the Idaho Supreme Court and the Idaho Court of Appeals. Silak graduated from New York University in New York City with a Bachelor of Arts in sociology and French literature, then attended the University of California in Berkeley, earning her Juris Doctor in 1976 from its School of Law (Boalt Hall). After working in private practice in San Francisco and Washington, D.C. and as a U.S. attorney in New York City, she moved west to Idaho, her husband's home state, in 1983.