Mariana Pajón Londoño ODB OLY (born 10 October 1991) is a Colombian cyclist, two-time Olympic gold medalist and BMX World Champion.

When she was four she began to perform her first training on the track, and had her first race, in which she competed against children of five and six years-of-age since there was no suitable category.

On 1 June 2008, Mariana won the UCI BMX World Championship 2008, held in Taiyuan, China, in the Junior Women's Cruiser category.

Pajón married fellow BMX rider Vincent Pelluard on 16 December 2017[7] after dating for 4 years.

[8] Pelluard acquired Colombian citizenship through his marriage with Pajón and now represents Colombia on the international scene.