SPG is a three-letter initialism, which can have different meanings:

Activities[link]

• Submersible pressure gauge used in scuba diving
• Shortest proof game, a type of chess problem
• Steals per game, a statistic in basketball

Language[link]

• Sarong Party Girl, a derogatory Singaporean term describing a local Asian woman who exclusively dates and prefers Caucasian men
• Spelling Punctuation and Grammar, often used in internet forums, when one user complains that another has made an SPG error

Organizations[link]

• Shapoorji Pallonji Group, an Indian business conglomerate
• Society for the Propagation of the Gospel in Foreign Parts, a missionary society of the Church of England, from 1701 to present
• Space Propulsion Group, an aerospace company developing hybrid rocket technology
• Special Patrol Group, a former unit of the Metropolitan Police
• Special Patrol Group (RUC), a former unit of the Royal Ulster Constabulary
• Special Protection Group, the organization responsible for protecting the Prime Minister of India and the Prime Minister's family
• State Protection Group, a unit of the New South Wales Police Force
• Sir Philip Game Centre, a Youth Centre sponsored by the Police and others in Addiscombe, Croydon

Technology[link]

• Service Provider Gateway, a provisioning gateway in a telecoms network
• Sync pulse generator, a type of video signal generator
• System Program Generator, a computer programming language that was in use around the 1970s
• Secure payment gateway, an e-commerce application
• Service Perimeter Guard, a service security pattern
• System-Process-Goal approach, this is a pattern for design problem specification.
• Single point ground, an electrical grounding arrangement

Other[link]

• Albert Whitted Airport (IATA: SPG), in St. Petersburg, Florida
• Self-propelled gun
• SexPowerGod, the annual fall dance sponsored by the Brown University Queer Alliance
• Slumber Party Girls, an American girl group
• Smithfield Premium Genetics Group, Smithfield Foods, Inc.'s swine genetics company
• Special Performance Group, see Saab 900
• Special Planning Guidance document (UK)
• Spheno Palatine Gangleoneuralgia or Brain freeze, a harmless condition brought about by eating or drinking a cold substance too rapidly
• Springfield, Massachusetts (Amtrak station)
• Special Patrol Group, Vyvyan's hamster in the British TV comedy series, The Young Ones
• Starwood Preferred Guest, the rewards program for people who stay at Starwood Hotels & Resorts Worldwide
• Strong Parental Guidance, one of the television classification ratings in the Philippines, executed by the Movie and Television Review and Classification Board.

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