SPN

SPN may refer to:

Places

 * Saipan International Airport (IATA airport code: ), Saipan
 * Shahjahanpur railway station (station code: ), Uttar Pradesh, India
 * Spooner Row railway station (National Rail station code: ), South Norfolk, England
 * Spree-Neisse station (station code: ), Brandenburg, Germany; see List of railway stations in Frankfurt

Telecommunications, computing, cryptography

 * Shortest job next, or shortest process next
 * Service Principal Name (SPN), used in the Kerberos protocol
 * Service provider name, stored on mobile phone subscriber identity module (SIM)
 * Substitution–permutation network, a mathematical operation used in cipher algorithms
 * Sum-Product Networks, a type of probabilistic machine learning model

Other uses

 * Sanapaná language (ISO 639 code: )
 * Sp(n), a type of symplectic group in mathematics
 * Savanna Pastoral Neolithic, a culture and collection of societies in the archaeological record of the Rift Valley
 * State Policy Network, a U.S. national network of conservative and libertarian think tanks
 * Service Professionals Network, a social media and business directory website.
 * Scientific pitch notation, a method to specify musical pitch
 * Solitary pulmonary nodule, or coin lesion in the lung
 * CD43 or SialoPhoriN, a protein
 * Supramolecular polymer networks
 * Shorthand for the TV show Supernatural
 * Swiss Pool for the Insurance of Nuclear Risks
 * Serbia Against Violence, a Serbian political coalition