79 may refer to:
- 79 (number)
- one of the years 79 BC, AD 79, 1979, 2079
- Eruption of Mount Vesuvius in 79, a catastrophic volcanic eruption in Italy
- 79 A.D., a 1962 historical epic film about the eruption
- Eruption of Mount Vesuvius in 79, a catastrophic volcanic eruption in Italy
- Dimension 79⊢⊇V, the main antagonist of Rick and Morty from a parallel Earth.
- 79 Eurynome, a main-belt asteroid