Wikipedia
OPX
OPX may refer to:
- OPX (meteorite class), a class of Martian meteorites
- Off-premises extension, an extension telephone at a location distant from its servicing private branch exchange
- Open Programming Extension, the DLL mechanism of the Open programming language of the Symbian operating system for mobile phones
- Orthopyroxene, a pyroxene, a type of rock-forming mineral
- Silver Xpress, a mail format used on FidoNet