Mallory Weggemann (born March 26, 1989) is a Paralympic swimmer from the USA. She became paraplegic after an epidural injection to treat post-shingles back pain in 2008. She broke many world records in the S7 classification, and won multiple gold medals at the IPC Swimming World Championships in 2009 and 2010. At the 2012 Paralympics, she was controversially reclassified to S8, a class for more able-bodied swimmers. She won the S8 50 metre freestyle event in a new Paralympic record time.