She held the world number one ranking of 200 meter breaststrokers in 2003. In U.S. competition, Beard won three 200 meter breaststroke, three 100 meter breaststroke, and two 200 meter individual medley US National titles.
She is a spokeswoman for Defenders of Wildlife, and enjoys interior decorating. Both of her sisters, Leah and Taryn, are swimmers. Amanda placed eighth in the Toyota Grand Prix of Long Beach Celebrity car race in 2006.
Her modeling work has included appearances in FHM, the 2006 Sports Illustrated Swimsuit Edition, and she posed nude for the July 2007 issue of Playboy magazine.
In November 2007, Beard made her first television commercial for GoDaddy entitled "Shock". It featured her "flashing" the seven Olympic medals she won from 1996-2004. Mark Spitz made a cameo appearance. In April 2008, she joined Fox Network's popular sports talk program, The Best Damn Sports Show Period as a correspondent, covering major sporting events.
In 2008, Beard participated in an anti-fur campaign for the organization PETA. She was photographed nude in front of an American Flag. The flag in that photograph is hung incorrectly according the United States Flag Code with the blue field to the upper right. Shortly after the PETA campaign was released, accusations of hypocrisy surfaced where Beard told a fashion blogger the year before that her favorite shoes were leather sandals and that she would never buy a low-quality jacket during an interview with SmartMoney magazine.