Thokchom Nanao Singh (born 8 January 1991) is an Indian boxer from Khoijuman Maning Leikai village in Bishnupur district of Manipur.

When Nanao Singh first put on a pair of boxing gloves, his father got furious and sent him to a boarding school so that his focus could be redirected to education.

Based on this performance, the Indian national coach predicted Nanao Singh's success at the 2008 Commonwealth Youth Games.

[10] A few weeks after this victory, Nanao Singh won the gold medal – the lone medalist for India – at the inaugural AIBA Youth World Boxing Championships that was held in Guadalajara, Mexico.

[18] Towards the end of 2009, Nanao Singh represented Team Asia at the season-ending President's Cup, the only AIBA event.

[25] Samsung chose a list of 10 Indian sports-persons as a part of Sports Ratna, a scholarship program with an aim to support players for the 2010 Asian Games.

[26] Olympic Gold Quest, a not-for-profit foundation to identify and support Indian athletes, chose him because of his talent and bright future.