Nathalie Simon (née Chevallier) (born 14 April 1962) is a former French athlete, who specialised in the 400 metres.

Champion of France 400 meters in 1986 she was seventh in the 4 × 400 m relay at the 1987 World Championships, at Rome.

She participated in the following year in the 1988 Seoul Olympics.

In 1987, she won the gold medal in the 400m at Mediterranean Games at Latakia, Syria.

This biographical article about a French sprinter is a stub.