Joanna Mitrosz (born 21 August 1988 in Gdynia, Poland), is a retired Polish rhythmic gymnast.

[1] Mitrosz competed at the 2008 Summer Olympics and placed 16th at the qualifications; she did not advance into the finals.

She had her highest placement at the 2011 World Championships finishing 8th in the all-around.

[1] Mitrosz married in late 2012 and decided to complete her career in 2013.

This biographical article related to a Polish rhythmic gymnast is a stub.