Monique Marie Henderson (born February 18, 1983, in San Diego, California) is an American track and field athlete, who specializes in the 400-meter dash.

[3] In 1999 while in high school, age 16, she won the 400m at the World Youth Championship in Bydgoszcz, Poland.

At age 17, she set a US junior class, as well as high school national record (since broken), at 50.74 in the 400 m at the CIF California State Meet.

In 2005, she won the Honda Award as the nation's best female collegiate track and field athlete.

[6][7] Since 2010, the gold medal at the Athens Olympics in 2004 has been in doubt as Crystal Cox, who ran for the team in a preliminary round, admitted to doping.