Natalia Vadimovna Molchanova (Russian: Наталья Вадимовна Молчанова, born 8 May 1962) is a Russian champion freediver and is the current President of the Russian Freedive Federation.
Molchanova is the world's most decorated freediver ever, with a total of 40 world records. She has, so far, 20 individual gold medals and two team gold medals from the Freediving World Championships. At the 2007 World Championships in Maribor, Slovenia, her winning time in the static discipline was better than the winning male gold medal. On 25 September 2009, she became the first woman ever to pass 100 meters with constant weight, in a dive of 101 meters. Molchanova was also the first woman to dive on one breath through the Blue Hole arch in Dahab, Egypt. In 2009 she also became the first freediver, male or female, to deliver three results, in three different categories (depth, length and time) with over 100 points in each according to the international point scoring systems that are recognised by AIDA International. During 2009 Molchanova set five world records and took all five gold medals at the two individual AIDA World Championships.
Molchanova has a son Alexey and daughter Oksana. She first trained in swimming, but semi-retired for about 20 years after giving birth. She resumed training aged 40, and shifted from swimming to freediving. Her first freediving competition was the 2003 Russian championships in Moscow, where she set a national record. Her son is also a prominent freediving competitor. Contrary to most international freedivers they go to the sea only 3-4 times per year, with the rest of training spent in the pool. Molchanova works as a freediving instructor at the Russian State University of Physical Education, Sport, Youth and Tourism.
The two records from 2009, 101 m and 90 m, were repealed by the federation 8 months after they had been set. The reason for that was the introduction of a new rule, which was then applied retrospectively.