SPX

SPX can refer to:


 * S&P 500, a stock market index
 * Sequenced Packet Exchange, a networking protocol
 * IATA code of Sphinx International Airport, an airport in Giza, Egypt
 * Small Press Expo, an alternative comics convention
 * SpaceX (SpX), a rocket manufacturer
 * Sports Performance eXtreme, a sports shoe and clothing brand
 * SPX Corporation, a Fortune 500 electronics company
 * St. Pius X, the 257th Pope of the Roman Catholic Church.
 * St Pius X College, Sydney, Australia
 * St. Pius X Seminary, Roxas City, Philippines
 * Superphénix, a nuclear power plant
 * Skulduggery Pleasant: Resurrection, the 10th book in the Skulduggery Pleasant series
 * A file extension used for Speex-encoded audio files
 * The National Rail code for St Pancras International railway station in Greater London
 * The former IATA and FAA code for Houston Gulf Airport