2013 Samsung Securities Cup – Men's singles

Lu Yen-hsun was the three-time defending champion, but lost to Germain Gigounon in the first round. Dušan Lajović won the title when Julian Reister withdrew with an illness.

Seeds
• # Lu Yen-hsun (first round)

• # 🇩🇪 Julian Reister (final, Withdrew, Illness)

• # Blaž Kavčič (semifinals)

• # 🇯🇵 Go Soeda (quarterfinals)

• # 🇷🇸 Dušan Lajović (champion)

• # 🇯🇵 Yuichi Sugita (semifinals)

• # 🇬🇧 Daniel Evans (second round)

• # 🇯🇵 Hiroki Moriya (quarterfinals)