Allison Marie Wagner (born July 21, 1977) is an American former competition swimmer, Olympic medalist, and former world record-holder.

[3] At the 1994 U.S. long-course championships held in August 1994, she won the national titles in the 200-meter and 400-meter individual medley events, as well as the 200-meter breaststroke.

[4] Wagner graduated early from high school to accept an athletic scholarship to attend the University of Florida in Gainesville,[1] where she swam for coach Chris Martin and coach Kevin Thornton's Florida Gators swimming and diving teams in National Collegiate Athletics Association (NCAA) competition from 1995 to 1998.

[5] At the 1996 Summer Olympics in Atlanta, Georgia, Wagner won the silver medal in the 400-meter individual medley, finishing second behind Ireland's Michelle Smith.

[6] On several occasions during Wagner's career, she was beaten in major championships by swimmers who were highly suspected or later proven to be users of banned performance-enhancing substances.