Timothy Montgomery (born January 28, 1975) is an American former track sprinter who specialized in the 100-meter dash. In 2005, he was stripped of his records—including a now-void men's 100-meter world record of 9.78 seconds set in 2002—after being found guilty of using performance-enhancing drugs as a central figure in the BALCO scandal. Since retiring from athletics, he has been tried and convicted for his part in a New York–based check fraud scheme and for dealing heroin in the Hampton Roads area of Virginia.