KKC may refer to:

• Kahn-Kalai conjecture, a mathematical problem in the field of probability
• Kennedy–King College, a public two-year community college in Chicago, Illinois, United States
• Khon Kaen Airport (IATA code: KKC), a Thai military/public airport
• The Kingkiller Chronicle, a fantasy trilogy by Patrick Rothfuss
• Klynveld Kraayenhof & Co., a Dutch accountancy firm
• Kohn, Kohn & Colapinto, a Washington, D.C. law firm
• Krispy Kreme Challenge, an annual charity event
• Krispy Krunchy Chicken, an American chain of fried chicken fast food restaurants
• Kulture Kiari Cephus, daughter of Cardi B and Offset (rapper)