Slash may refer to:
- Slash (punctuation), the "/" punctuation character, also used in computing
- In speech colloquially as a conjunction, in a place where a "/" would be put in writing
- Slash fiction, a genre of fan fiction dealing with same-sex relationships or sexual encounters
- Slash (logging), woody debris generated by timber harvesting
- Slash Pine, a tree native to the southeast United States
- Slash (Marvel Comics), a character in the Marvel Comics Universe
- Slash, a character from Teenage Mutant Ninja Turtles and Mighty Mutanimals
- Slash and burn, an agricultural procedure
- Slash'EM, a variant of the computer game NetHack
- Feynman slash notation, of quantum field theory
- Slash rating, a US National Electrical Code circuit interrupt hardware qualifier
- A cutting attack with a bladed weapon
- Slash, the content management software used by Slashdot