Elmer Antonio Mejía Rodríguez (born 23 June 1978) is a retired footballer who last played for Real Esteli in the Nicaraguan Primera División. Born in Honduras, he represented both Honduras and Nicaragua internationally.

Mejía played for F.C. Motagua, with whom he won the 2001 Apertura,^[1] before moving abroad to become captain of Nicaraguan side Real Estelí. By 2012, Mejía had scored 100 goals for Estelí after winning the league's top goalscorer award with 14 goals.^[2] In 2007/08 he amassed 33 goals.^[3]

Mejía made his debut for Honduras in a July 2001 friendly match against Ecuador, which proved to be his sole international match.