2017 ITTF Men's World Cup

The 2017 ITTF Men's World Cup was a table tennis competition held in Liège, Belgium, from 20 to 22 October 2017. It was the 38th edition of the ITTF-sanctioned event, and the fourth time that it had been staged in Belgium.

In the final, Germany's Dimitrij Ovtcharov defeated fellow German Timo Boll, 4–2, to win his first World Cup title.

Qualification
The following list of players was confirmed on 25 September 2017, based on the qualification system set by the ITTF.

Competition format
The tournament consisted of two stages: a preliminary group stage and a knockout stage. The players seeded 9 to 20 were drawn into four groups, with three players in each group. The top two players from each group then joined the top eight seeded players in the second stage of the competition, which consisted of a knockout draw.

Seeding
The seeding list was based on the official ITTF world ranking for October 2017.

• # 🇨🇳 Ma Long (semifinals)

• # 🇩🇪 Dimitrij Ovtcharov (champion)

• # 🇩🇪 Timo Boll (final)

• # 🇯🇵 Jun Mizutani (quarterfinals)

• # 🇯🇵 Koki Niwa (quarterfinals)

• # 🇨🇳 Lin Gaoyuan (quarterfinals)

• # 🇫🇷 Simon Gauzy (semifinals)

• # Chuang Chih-yuan (first round)

• # 🇰🇷 Lee Sang-su (first round)

• # Marcos Freitas (first round)

• # 🇪🇬 Omar Assar (first round)

• # Chen Chien-an (Preliminary round, withdrew)

• # 🇺🇦 Kou Lei (first round)

• # Quadri Aruna (first round)

• # 🇰🇷 Jeong Sang-eun (first round)

• # 🇷🇺 Alexander Shibaev (quarterfinals)

• # 🇧🇪 Cédric Nuytinck (Preliminary round)

• # 🇧🇷 Gustavo Tsuboi (first round)

• # 🇺🇸 Kanak Jha (Preliminary round)

• # 🇦🇺 David Powell (Preliminary round)

Preliminary stage
The preliminary group stage took place on 20 October, with the top two players in each group progressing to the main draw.

Chen Chien-an withdrew from the competition on the opening day due to illness.

Main draw
The knockout stage took place from 21–22 October.