La Copa Junior (2005) was a professional wrestling tournament produced and scripted by the Mexican wrestling promotion Consejo Mundial de Lucha Libre. The tournament ran from January 28, 2005 to February 11, 2005 in Arena México in Mexico City, Mexico. CMLL's recurring La Copa Junior tournament featured second, third or fourth generation wrestlers completing against each other. The 2005 version of the La Copa Junior was the second tournament held by CMLL.

The Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL) has held the La Copa Junior tournament on an infrequent schedule since 1996. The tournament pays respect to the fact that wrestling is a family tradition in Lucha libre, with many second or even third-generation wrestlers following the footsteps of their relatives. So far CMLL has held ten tournaments starting in 1996 and then intermittently since 2005. While most of the family relationships are real there are a few instances of the family relationship being a storylines family relationship, such as Dragón Rojo Jr. being billed as the grandson of Dragón Rojo, when in reality that is simply a storyline created by CMLL.