Tokio may refer to:
- Tokyo (東京, Tōkyō), the capital of Japan, used primarily in non-English-speaking countries
Tokio (トキオ) may also refer to:
Music
- Tokio (band), a Japanese pop/rock band
- Tokio (album), their debut album
- Tokio Hotel, a German rock band
- Tokio (Russian band), a Russian rock band
- Tokio, a Japanese singer Kenji Sawada's album and song
Places
- Tokio, North Dakota, a community in the United States
- Tokio, Texas, a community in the United States
- Tokio, Washington, a ghost town.
Companies and other organizations
- Tokio Marine Nichido, a Japanese insurance company
- Tokio Millennium Re Ltd., a reinsurance company
Other uses
- Tokio (given name), a masculine Japanese given name
- 498 Tokio, a minor planet
- Tokio (arcade game), an arcade game by Taito Corporation
- City of Tokio, an iron steamship built in 1874 in the USA
- Tokio (yacht), a yacht
- Tokio Express, a container ship that caused the great Lego spill of 1997
- Tokio (software), asynchronous input/output software library for the Rust programming language