2013 Busan Open Challenger Tennis – Singles

Tatsuma Ito was the defending champion, but lost to Dudi Sela in the quarterfinals. Sela went on to win the title by defeating Alex Bogomolov Jr. 6–1, 6–4 in the final.

Seeds
• # Lu Yen-hsun (first round)

• # 🇸🇰 Lukáš Lacko (first round)

• # 🇮🇱 Dudi Sela (champion)

• # 🇷🇺 Alex Bogomolov Jr. (final)

• # 🇯🇵 Go Soeda (first round)

• # 🇯🇵 Tatsuma Ito (quarterfinals)

• # 🇦🇺 Matthew Ebden (quarterfinals)

• # 🇯🇵 Yūichi Sugita (first round, retired)