Johanna Ernst (born 16 November 1992) is an Austrian professional rock climber who specialised in competition lead climbing and competition bouldering, but also does outdoor sport climbing.

In 2008, when she was 16, she participated in her first Lead Climbing World Cup and won it, earning three gold, two silver and one bronze medals.

[4] As a decoration of honor for these outstanding achievements, in 2009 she was also awarded the Gold Medal for Services to the Republic of Austria.

[5] In 2010, she could not compete in the Lead Climbing World Cup due to an ankle sprain caused by a fall during the Bouldering World Cup on June 4 in Vail.

However, in September she was able to earn the silver medal at the European Championships in Imst.