PKX
PKX stands for:
- PKX (organism) ( Tetracapsuloides ), Myxozoa parasite in salmon
- POSCO (NYSE abbreviation), South Korean steel manufacturer
- Beijing Daxing Airport (IATA code), Chinese Airport
- PKX-A class (Patrol Killer eXperimental; Yoon Youngha class), South Korean missile patrol boat class
- PKX-B-class (Patrol Killer eXperimental; Chamsuri-211-class), future South Korean light patrol boat class