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SP may refer to:

In science and technology[edit]

In biology and medicine[edit]

In computing and telecommunications[edit]

In geology[edit]

  • a USCS symbol for sand, poorly graded
  • Spontaneous potential, a measurement taken by oil industry well loggers to characterise rock formation properties

In mathematics[edit]

Other uses in science and technology[edit]

In arts and entertainment[edit]



In politics[edit]

In religion[edit]

  • Suppressive Person, a term used in Scientology
  • Piarists, a Catholic religious order, formally known Ordo Clericorum Regularium pauperum Matris Dei Scholarum Piarum, abbreviated Scholarum Piarum (Pious Schools)
  • Südtiroler Pfadfinderschaft, a Catholic scouting association in Italy

In genealogy[edit]

  • s.p., sine prole (Latin: "without issue" [i.e., having no children], full form d.s.p. decessit sine prole, "died without issue")

Other uses[edit]