Masumi Ono (小野真澄, Ono Masumi, born 5 December 1975 in Hokuto, Hokkaido) is a retired Japanese athlete who specialised in the pole vault.

[2] She was the first Japanese female vaulter to jump over 4 metres.

[3] She won multiple medals at the continental level.

She has personal bests of 4.21 metres outdoors (2003) and 4.30 metres indoors (2002).