Martes y 13

Martes y 13 could refer to:


 * Tuesday the 13th, the Spanish equivalent to Friday the 13th
 * Martes y Trece, Spanish comedy group, 1978–1997
 * Martes 13 (TV program), Chilean TV program broadcast 1983-1995 on Canal 13
 * Martes y trece (film), a 1961 Spanish comedy featuring Licia Calderón