The Girls Singles tournament of the 2012 BWF World Junior Championships was held from October 30 until November 3. The defending champion, Ratchanok Inthanon, who won the tournament for 3 years in a row decided not to take part this time even though her age was still eligible.
Japanese girl Nozomi Okuhara, who was beaten by Inthanon in the semi final of the previous year's tournament, won the all-Japanese final against her teammate Akane Yamaguchi 21-12, 21-9.
References
2012 BWF World Junior Championships – Girls singles Wikipedia(Text) CC BY-SA