Irene Steer (10 August 1889 – 18 April 1977) was a Welshfreestyleswimmer. She was one of the three Welsh women who have won Olympic gold medals, the others being Nicole Cooke (cycling, 2008) and Jade Jones (taekwondo, 2012). In 1912, Steer won a gold medal in the 4×100 m relay and failed to reach the final of the individual 100 m race.
Steer started as a breaststroke swimmer, but in 1908–1909 changed to crawl. After retiring from competitions she married William Nicholson, director and chairman of Cardiff City F.C. They had three daughters and one son.