Sou may refer to:
- Sou (pastry), a type of food pastry
- Sou (film), a film by Theodore Ushev for Shorts in Motion: The Art of Seduction
- Solidus (coin), French slang for a coin of little value, also called a sou, which is additionally the colloquial name in Quebec for what evolved into the Canadian penny coin
- Sou (surname), a Cantonese romanization of the Chinese surname Su