Nancy Contreras

Nancy Contreras
Personal information
BornJanuary 20, 1978 (1978-01-20) (age 48)
Medal record
Women's track cycling
Representing  Mexico
World Championships
2001 Antwerp 500m time trial
2002 Ballerup 500m time trial
2003 Stuttgart 500m time trial
2003 Stuttgart Sprint
Pan American Games
2003 Santo Domingo 500m time trial
1999 Winnipeg 500m time trial
1995 Mar del Plata Sprint
2011 Guadalajara Sprint
Central American and Caribbean Games
2002 San Salvador 500m time trial
2002 San Salvador Sprint
2006 Cartagena 500m time trial
2002 San Salvador Keirin
2006 Cartagena Sprint
2006 Cartagena Keirin

Nancy Yareli Contreras Reyes (born January 20, 1978, in Ciudad de México, Distrito Federal) is a female track cyclist from Mexico, who represented her native country twice at the Summer Olympics: 1996 and 2004. She won a bronze medal in the 1995 Pan American Games in Mar del Plata, Argentina.

Contreras won the 500m time trial gold during the 1998 Central American and Caribbean Games, but failed the doping control with Pseudoephedrine and her medal was removed.