Mirna Jukić (born 9 April 1986) is a retired Austrian swimmer of Croatian origin who won a bronze medal in both short course and long course at the world championships in swimming. She is trained by her father Željko Jukić, a former basketball player. She has had numerous European and World championship successes.
Jukić was born in Novi Sad (Serbia, then SFR Yugoslavia) and grew up in Vukovar, Croatia. In November 1991, the family moved to Zagreb, and her father started training her at Mladost in 1996. Her brother, Dinko Jukić, with whom she was trained early on, also became an international-level swimmer. In the autumn of 1999, the family moved to Vienna, Austria, and the same year Mirna became an Austrian citizen. Her brother became an Austrian citizen in 2000, while the parents remained Croatian citizens.
At the 2008 Olympics Jukić garnered a bronze medal in the 100 m breaststroke (1:07.34); she also swam the 200 m breaststroke. At the 2009 World Aquatics Championships she won the bronze medal in the 200 m breaststroke final with a time of 2:21.97.