SGP may refer to:
- The Secret Garden Party, a small music festival in the United Kingdom
- Signaling Gateway Process, a physical gateway that provides interconnection of IP signaling to SS7 Network signaling over SS7 (T1/E1) links using SigTran
- Simmering-Graz-Pauker, an Austrian company, now part of Siemens
- Simplified General Perturbations model, a mathematical model used to calculate orbital state vectors
- The Society of General Physiologists, a scientific organization
- Sophie Germain prime, a type of prime number in number theory
- Speedway Grand Prix, a series of motorcycling contests
- The Stability and Growth Pact, an EU fiscal agreement
- Stefan Grand Prix, a proposed Serbian Formula One team
- Student Growth Percentiles, an open source methodology for quantifying student academic progress
- The symbol grounding problem in artificial intelligence
- Symposium on Geometry Processing, a computer graphics conference
- Political parties
- The Reformed Political Party (Staatkundig Gereformeerde Partij) in the Netherlands
- The Scottish Green Party in the United Kingdom
- Other
- SGP is the ISO 3166-1 alpha-3 country code for Singapore
- sgp is the ISO 639-3 code for the Singpho dialect
- Schweizer SGP 1-1, a single-seat, high-wing primary glider