2018 BWF World Junior Championships – Boys' singles

The boys' singles of the tournament 2018 BWF World Junior Championships was held on 12–18 November. The defending champions of the last edition is Kunlavut Vitidsarn from Thailand.

Seeds
🇹🇭 Kunlavut Vitidsarn (champion) Ikhsan Rumbay (fourth round) 🇨🇳 Li Shifeng (semifinals) 🇮🇳 Lakshya Sen (semifinals) 🇫🇷 Arnaud Merklé (third round) 🇮🇪 Nhat Nguyen (quarterfinals) 🇨🇳 Bai Yupeng (second round) 🇸🇬 Jason Teh (third round)

Chen Shiau-cheng (fourth round) Christopher Grimley (first round) 🇧🇪 Julien Carraggi (second round) Alberto Alvin Yulianto (quarterfinals) 🇩🇪 Lukas Resch (third round) 🇨🇦 Brian Yang (third round) 🇸🇬 Joel Koh (second round) 🇺🇦 Danylo Bosniuk (third round)