2017 BWF World Junior Championships – Boys' singles

The boys' singles event of the 2017 BWF World Junior Championships was held on 16–22 October. The defending champion was Sun Feixiang from China.

Seeds
🇹🇭 Kunlavut Vitidsarn (champion) 🇮🇳 Lakshya Sen (quarterfinals) Lee Chia-hao (fourth round) Leong Jun Hao (final) 🇹🇭 Ruttanapak Oupthong (fifth round) 🇯🇵 Kodai Naraoka (semifinals) Ikhsan Rumbay (third round) 🇮🇪 Nhat Nguyen (quarterfinals)

🇰🇿 Dmitriy Panarin (third round) 🇲🇩 Cristian Savin (fourth round) 🇫🇷 Arnaud Merklé (fifth round) Sim Fong Hau (fourth round) 🇮🇳 Kartikey Gulshan Kumar (fifth round) 🇫🇷 Christo Popov (quarterfinals) 🇫🇷 Leo Rossi (fifth round) 🇭🇰 Chan Yin Chak (third round)