The Melodi Grand Prix Junior 2009 was Norway's eighth national Melodi Grand Prix Junior for young singers aged 8 to 15. It was held in Oslo Spektrum, Oslo, Norway and broadcast live Norwegian Broadcasting Corporation (NRK) in September 2009.
There were 540 submissions out of which 10 were chosen for the finals, a mix of solo singers, but also two bands, and two hip-hop contributions. The competition was won by Jørgen Dahl Moe with his song "Din egen vei" and the runner up was Mystery with their song "Rock e sunt". Both went on to represent Norway in MGP Nordic 2009.
The album Melodi Grand Prix Junior 2009 containing the songs of the finals reached No. 1 on the VG-lista Norwegian Albums Chart on week 38 of 2005 staying at the top of the charts for 1 week.
The exact number of public votes was unknown. Only first and second places were announced during then.