Omar Alejandro Esparza Morales (born 21 May 1988) is a Mexican former professional footballer who played as a right-back and manager.

Esparza was given high praise by Mexico coach Javier Aguirre for his performances and was expected to cement a place in the 2010 World Cup starting line-up.

However a knee injury picked up in the final game of the season ended his world cup hopes and he is not expected to be back in full training until June 2010.

He played in the 2005 FIFA U-17 World Championship Match where Mexico obtained the cup against Brazil.

Mexico played well but was eliminated by Argentina in the quarter-finals, losing 1-0 thanks to a goal scored by Maximiliano Moralez after bouncing the ball off a Mexican defender in the 45th minute .