Valid ISO 3166-1 alpha-2 codes and country flags from 2003 to 2015 on the day of the Junior Eurovision Song Contest final each year. Italicized countries and territories had changed name or ceased to exist by a given date, but the ISO code was not obsolete or the ISO country name was not changed yet.
15 November 2003 edit
Bolded countries competed in the Junior Eurovision Song Contest 2003 in Copenhagen, Denmark.
20 November 2004 edit
Bolded countries competed in the Junior Eurovision Song Contest 2004 in Lillehammer, Norway.
26 November 2005 edit
Bolded countries competed in the Junior Eurovision Song Contest 2005 in Hasselt, Belgium.
2 December 2006 edit
Bolded countries competed in the Junior Eurovision Song Contest 2006 in Bucharest, Romania.
8 December 2007 edit
Bolded countries competed in the Junior Eurovision Song Contest 2007 in Rotterdam, Netherlands.
22 November 2008 edit
Bolded countries competed in the Junior Eurovision Song Contest 2008 in Limassol, Cyprus.
21 November 2009 edit
Bolded countries competed in the Junior Eurovision Song Contest 2009 in Kyiv, Ukraine.
20 November 2010 edit
Bolded countries competed in the Junior Eurovision Song Contest 2010 in Minsk, Belarus.
3 December 2011 edit
Bolded countries competed in the Junior Eurovision Song Contest 2011 in Yerevan, Armenia.
1 December 2012 edit
Bolded countries competed in the Junior Eurovision Song Contest 2012 in Amsterdam, Netherlands.
30 November 2013 edit
Bolded countries competed in the Junior Eurovision Song Contest 2013 in Kyiv, Ukraine.
15 November 2014 edit
Bolded countries competed in the Junior Eurovision Song Contest 2014 in Marsa, Malta.
21 November 2015 edit
Bolded countries competed in the Junior Eurovision Song Contest 2015 in Sofia, Bulgaria.