Itzhak Mamistvalov is an Israeli Paralympic swimmer. Mamistvalov was born with cerebral palsy, and uses his right hand only when swimming. Classified S1, the class for swimmers with the most severe disabilities, he competes in S1 and S2 events. Mamistvalov represented Israel at the 2004 Summer Paralympics in Athens, where he won two gold medals and one silver, and set two Paralympic records. As of February 2013, Mamistvalov is IPC World Record holder in the S1 50m, 100m and 200m freestyle events.