SMP may refer to:

Organisations Scale Model Products, 1950s, acquired by Aluminum Model Toys School Mathematics Project, UK developer of mathematics textbooks Sekolah Menengah Pertama, "junior high school" in Indonesia Shanghai Municipal Police, until 1943 Sipah-e-Muhammad Pakistan, Pakistani group banned as terrorist Post-nominal letters of Roman Catholic order Sisters of Mary of the Presentation Standard Motor Products (NYSE: SMP), US automotive product company , the Finnish Rural Party, 1959-2003

Science and technology Shape-memory polymer, smart materials Signal Message Processor, for the Multifunctional Information Distribution System Silyl modified polymers, used in adhesives and sealants Simulation Model Portability, SMP2, European space mission simulator standard Slow-moving proteinase, the enzyme Cathepsin E Socialist millionaire problem in cryptography Sorbitan monopalmitate, a food additive SOTA Mapping Project, a website for radio amateurs Stable marriage problem in mathematics Stable massive particle in physics, e.g the MoEDAL experiment Surface-mount package, for electronic components

Computing Serial Management Protocol for Serial attached SCSI (SAS) System Modification Program, IBM mainframe software SMP/E (System Modification Program/Extended), IBM mainframe software Supplementary Multilingual Plane, Unicode characters for historical scripts SMP (computer algebra system) Symmetric multiprocessing Security Manager Protocol used in Bluetooth Low Energy SimpleX Messaging Protocol, a privacy focused messaging protocol. See it in the Comparison of instant messaging protocols

Entertainment SMP (band) Survival Multiplayer, a common Minecraft server gamemode Super Mario Party, a 2018 video game released on the Nintendo Switch

Other uses Securities Markets Program of the European Central Bank Statutory Maternity Pay in the UK Sau Mau Ping station, Hong Kong Scalp micropigmentation SHOKUGAN MODELING PROJECT, a Japanese plastic model kit series released by Bandai Single-member plurality voting Sydney Motorsport Park, a motorsport facility located in Australia SMP Racing, a Russian auto racing team