Irene Emma Mullen (February 16, 1914 – December 26, 1981), later known by her married name Irene Warnick, was a Canadian freestyle swimmer who competed in the 1932 Summer Olympics in Los Angeles.
In 1932 she was a member of the Canadian relay team which finished fourth in the 4x100-metre freestyle relay.
In the 100-metre freestyle, she was eliminated in the first round.