C40 (original) (raw)
C40, or variants thereof, may refer to: * C40 Cities Climate Leadership Group, a group of 97 cities around the world * King's Knight Opening (ECO: C40), a chess opening * Yamaha C40, a guitar
C40, or variants thereof, may refer to: * C40 Cities Climate Leadership Group, a group of 97 cities around the world * King's Knight Opening (ECO: C40), a chess opening * Yamaha C40, a guitar