Soylent may refer to:
- Soylent, a fictional food substance from Harry Harrison's 1966 science fiction novel Make Room! Make Room!
- Soylent Green, a 1973 film based loosely on Harrison's novel
- Soylent (drink), a meal replacement beverage founded by Rob Rhinehart in Silicon Valley and funded by ycombinator.
- "Soylent Green", a song on the 1993 Wumpscut album Music for a Slaughtering Tribe