Omar Zepeda (born 8 July 1977) is a male race walker from Mexico. He finished sixth in the 50 km race at the 2005 World Championships in a personal best time of 3:49:01 hours. Also he won the silver medall with the Mexican Team of 50km at the Race Walking World Cup in Cheboksary, Russia in May 2008.
| Year | Competition | Venue | Position | Notes |
|---|---|---|---|---|
| Representing Mexico | ||||
| 1997 | World Championships | Athens, Greece | 18th | 20 km |
| 2001 | World Championships | Edmonton, Canada | DNF | 50 km |
| 2003 | Pan American Games | Santo Domingo, Dominican Republic | DSQ | 50 km |
| 2005 | World Championships | Helsinki, Finland | 6th | 50 km |
| 2007 | Pan American Games | Rio de Janeiro, Brazil | 3rd | 50 km |
| World Championships | Osaka, Japan | DSQ | 50 km | |
| 2009 | World Championships | Berlin, Germany | DSQ | 50 km |
| 2010 | World Race Walking Cup | Chihuahua, Mexico | 13th | 50 km |