C2C is a three-letter abbreviation that can refer to:

• web cam chat, from the instant messaging shorthand "cam-to-cam", usually spelt in lower case "c2c"
• Consumer-to-consumer electronic commerce
• Sea to Sea Cycle Route, the most popular of British cycle routes
• C2C (cable system), a submarine telecommunications cable system linking east Asia and the USA
• Cadet Second Class, the rank of a cadet in his third (junior) year at the United States Air Force Academy

See also

• c2c, a British train operating company
• 18C2C, a railroad operations and share trading board game.