Sou or SOU may refer to:
People
- Sou (surname), a Cantonese romanization of the Chinese surname Su
- "Sou", a nickname of William Sousa Bridgeforth (1907–2004), American Black league baseball team owner
Codes
- SOU, IATA code for Southampton Airport, England
- SOU, National Rail code for Southampton Central railway station, England
- SOU, railroad reporting mark for Southern Railway (U.S.)
- sou, ISO 639-3 language code for Southern Thai language
SOU
- Special Operations Unit (disambiguation)
- Southern Oregon University, United States
- Statens offentliga utredningar, an official series of reports of committees appointed by the Swedish Government
- Sound of Urchin, American eclectic alternative rock band
- Southland railway station, Melbourne
Other uses
- Sou (French coin), various French coins
- Penny (Canadian coin), colloquially called a sou in Quebec
- Sou (pastry), a type of food pastry
- Sou (album), a studio album by Marcelo Camelo
- Sou (film), a Canadian two-minute mobile short for video cell phones
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