Multi can mean:
- Alternate character in online gaming
- Multi 2 diamonds, a contract bridge convention
- Multirhyme, a synonym for feminine rhyme used in hip hop music
- HMX-12 Multi, a character from the visual novel and anime series To Heart
In addition:
- Multiculturalism is a public policy approach for managing cultural diversity in a multiethnic society
- Multitude, a term used by some philosophers to refer to the population of the world
- Multitudes, a French philosophical, political and artistic monthly review.
- Multiplication, an elementary arithmetic operation.