SPG can refer to:

• Albert Whitted Airport (IATA: SPG), in St. Petersburg, Florida
• Springfield Union Station (Massachusetts), Amtrak station code SPG

• Slumber Party Girls, an all-girl American pop band
• SPG Records
• Steam Powered Giraffe, a steampunk musical project

• Shortest proof game, a type of chess problem
• Special Patrol Group, a hamster in UK TV series The Young Ones
• Strong Parental Guidance (Rated SPG), Philippine Movie and Television Review and Classification Board rating
• The Super Parental Guardians, a Philippine film

• Spastic gait gene, causing hereditary spastic paraplegia

• Simon Property Group, US, NYSE symbol
• Society for the Propagation of the Gospel in Foreign Parts, Church of England, 1701-1964
• Special Patrol Group (RUC) of the Royal Ulster Constabulary
• Special Patrol Group of the Metropolitan Police
• Special Protection Group, for the Prime Minister of India
• Starwood Preferred Guest, a defunct loyalty program
• State Protection Group, of New South Wales police

• Sarong Party Girl, a Singaporean insult

• Self-propelled gun, a gun mounted on a self-propelled chassis, usually referring to Self-propelled artillery or Self-propelled anti-tank gun
• Submersible pressure gauge in scuba diving
• Sync pulse generator, a type of video signal generator

• A Saab 900 car option
• Springvale railway station, Melbourne
• Steals, a basketball statistic