The Tokyo Indoor was a men's tennis tournament played in Tokyo, Japan on indoor carpet courts from 1966 to 1995.
It was played as part of the Grand Prix Tennis Tour from 1978 to 1989 and part of the Grand Prix Super Series, the precursors to the Masters 1000, from 1978 to 1988.
The tournament was held at the Tokyo Municipal Gym in 1978 and 1979, then the Yoyogi National Gymnasium, before returning to the former for the 1990s.
The tournament was known for offering more prize money than most others.
The tournament was also known by its sponsorship names such as the Seiko World Super Tennis [1] and Seiko Super Tennis.