series of supercomputers Service pack, software update Stack pointer Stored procedure Mathematics Trace (linear algebra), or "Spur" (German), of a square matrix Sp(n) and Sp(2n,F), a symplectic group in mathematics Transportation SATA Air Acores (IATA code SP) Saidapet railway station (station code SP) Southern Pacific Railroad (reporting mark SP) Other uses 25 metre pistol , a shooting sport formerly known as sport pistol Aircraft registration prefix for Poland s.p., sine prole (Latin: "without issue" (i.e., having no children), full form d.s.p. decessit sine prole, "died without issue") Ś.P. Świętej pamięci meaning holy memory is written on many Polish gravestones Provincial road (Italy) (Strada Provinciale), a category of provincial roads in Italy September Seri Pahlawan Gagah Perkasa (S.P.), a Malaysian military decoration Spanish language Special (disambiguation) Spelling, especially to note a spelling error Spurius, the Roman praenomen; see Spurius (disambiguation) Suppressive Person, in Scientology Starting price, odds applicable on a horse race as the race is about to start Superintendent (police), a rank in British police services and in most English-speaking Commonwealth nations SP, an abbreviation for the Syrian pound See also SPs SPS (disambiguation)