Annika Mehlhorn (born 5 August 1983) is a butterfly and medley swimmer from Germany.

She competed at the 2004 Summer Olympics in the 200 m butterfly, but failed to reach the final.

[1] She became European champion in the 200 m butterfly at the European Short Course Swimming Championships 2000 in Valencia.

At the same event Mehlhorn won the silver medal at the 2001 World Aquatics Championships in Fukuoka, Japan.

This biographical article related to a German swimmer is a stub.