| Venue: | Orbita Hall, Wrocław, Poland |
| Dates: | 22 July 2017 |
| Competitors: | 15 |
| Nations: | 11 |
| Gold: |  Atsamaz Kaziev |
| Silver: |  Misbah Hossam |
| Bronze: | Usukhbayar Ochirkhuu |
| Prev: | 2013 |
The men's middleweight competition in sumo at the 2017 World Games took place on 22 July 2017 at the Orbita Hall in Wrocław, Poland.[1]
A total of 15 athletes entered the competition. They fought in the cup system with repechages.
| Score | |||
|---|---|---|---|
| 1/16 Finals | |||
| Atsamaz Kaziev (RUS) | Bye | ||
 Colton Runyan (USA) |  Daniel Bazzana (AUS) | ||
 Mykola Kozhukhov (UKR) |  Kiyoyuki Noguchi (JPN) | ||
 Michał Luto (POL) |  Walter Rivas (VEN) | ||
| Usukhbayar Ochirkhuu (MGL) | Eoghn Tivoli (AUS) | ||
| Aron Rozum (POL) | Hayato Miwa (JPN) | ||
| Kena Heffernan (USA) | Misbah Hossam (EGY) | ||
 Giorgi Meshildishvili (GEO) |  Takahiro Higuchi (BRA) | ||
| Quarterfinals | |||
| Atsamaz Kaziev (RUS) | Colton Runyan (USA) | ||
| Kiyoyuki Noguchi (JPN) | Michał Luto (POL) | ||
| Usukhbayar Ochirkhuu (MGL) | Aron Rozum (POL) | ||
| Misbah Hossam (EGY) | Giorgi Meshildishvili (GEO) | ||
| Score | |||
|---|---|---|---|
| 1/16 Repechages | |||
| Colton Runyan (USA) | Bye | ||
| Kiyoyuki Noguchi (JPN) | Walter Rivas (VEN) | ||
| Aron Rozum (POL) | Eoghn Tivoli (AUS) | ||
| Giorgi Meshildishvili (GEO) | Kena Heffernan (USA) | ||
| Repechages Quarterfinals | |||
| Colton Runyan (USA) | Walter Rivas (VEN) | ||
| Aron Rozum (POL) | Giorgi Meshildishvili (GEO) | ||
| Score | |||
|---|---|---|---|
| Semifinals | |||
| Atsamaz Kaziev (RUS) | Michał Luto (POL) | ||
| Usukhbayar Ochirkhuu (MGL) | Misbah Hossam (EGY) | ||
| Repechages Semifinals | |||
| Usukhbayar Ochirkhuu (MGL) | Yoritaoshi | Walter Rivas (VEN) | |
| Michał Luto (POL) | Aron Rozum (POL) | ||
| Score | |||
|---|---|---|---|
| Gold medal match | |||
| Atsamaz Kaziev (RUS) | Misbah Hossam (EGY) | ||
| Bronze medal match | |||
| Usukhbayar Ochirkhuu (MGL) | Yorikiri | Aron Rozum (POL) | |