María Luisa Calle Williams (born October 3, 1968) is a Colombian professional racing cyclist.

[1] In the 2004 Summer Olympics, she won a bronze medal in the cycling women's points race, the first Colombian to win a medal in cycling.

She was stripped of the medal after a positive test result for the banned stimulant heptaminol.

The medal was returned, however, after the test result was proven incorrect.

[3] On 22 July 2015, it was disclosed that she had tested positive for GHRP2 at the 2015 Pan American Games[4] and was subsequently banned for four years.