Keiko Onidani (鬼谷 慶子, Onidani Keiko) (born 21 December 1994) is a Japanese para-athlete specializing in discus throw.

She represented Japan at the 2024 Summer Paralympics.

In May 2024, Onidani represented Japan at the 2024 World Para Athletics Championships and won a silver medal in the discus throw F53 event.

[2] She then represented Japan at the 2024 Summer Paralympics and won a silver medal in the javelin throw F53 event.

This article about a Paralympic medalist of Japan is a stub.