James Franklin Williams, Jr. (born March 8, 1984) is a former American football cornerback who previously played for the Atlanta Falcons and San Francisco 49ers of the National Football League (NFL). He played college football for Virginia Tech, and was recognized as a unanimous All-American. He was selected by the Atlanta Falcons in the second round of the 2006 NFL Draft, but was later suspended for violating the NFL's banned substances policy.