Viti can refer to:
- Viti, Estonia, a village in Estonia.
- Viti, a warm crater lake in central Iceland.
- Viti is a town in Kosovo.
- Viti is the Fijian-language name of Fiji, an island nation in the South Pacific Ocean.
- Viti language, spoken in Nigeria.
In relation to Fiji:
- Bei Kai Viti, a political party in Fiji in the years 1999-2005.
- Kingdom of Viti, the first unified Fijian state, existed in the years 1871-1874.
- Tui Viti, a title which denotes Fijian royalty and translates as King of Fiji.
- Viti Levu, the largest island in Fiji.
- Viti Levu Giant Pigeon, Natunaornis gigoura, a prehistoric flightless pigeon from Fiji.
- Viti Levu Group, a group of islands in Fiji.
- Viti Levu Rail, Vitirallus watlingi, a prehistoric bird from Fiji.
- Viti Levu Scrubfowl, Megapodius amissus, a prehistoric bird from Fiji.
- Viti Levu Snipe, Coenocorypha miratropica, a prehistoric bird from Fiji.
Unrelated to the above:
- Fabrizio Viti (born 1967), Italian fashion designer
- Timoteo Viti, an Italian painter (b. 1469/70 †1523/25).
- Viti Academy, in Paris, owned by the Spanish painter Anglada Camarasa.
- Viti-Dandu, an amateur sport similar to cricket.
- Viti Do, a village in Montenegro.