MCX may refer to: Manila Commodity Exchange, a commodity and derivatives exchange based in Makati, Philippines Multi Commodity Exchange, an independent commodity exchange based in India. Merchant Customer Exchange, a joint venture with the desired purpose of offering a new platform for smartphone-based transactions MCX connector, a coaxial RF connector Muntinlupa–Cavite Expressway, an expressway between Muntinlupa and Cavite 1110, in Roman numerals SIG Sauer MCX, a carbine series designed and manufactured by SIG Sauer