| Hiroaki Shimauchi | |
| Position: | Outfielder |
| Team: | Tohoku Rakuten Golden Eagles |
| Number: | 35 |
| Birth Date: | 2 February 1990 |
| Bats: | Left |
| Throws: | Left |
| Debutleague: | NPB |
| Debutdate: | March 30 |
| Debutyear: | 2012 |
| Debutteam: | Tohoku Rakuten Golden Eagles |
| Statyear: | May 8, 2024 |
| Statleague: | NPB |
| Stat1label: | Batting average |
| Stat1value: | .273 |
| Stat2label: | Home runs |
| Stat2value: | 104 |
| Stat3label: | Runs batted in |
| Stat3value: | 550 |
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Hiroaki Shimauchi (島内 宏明, born February 2, 1990) is a Japanese professional baseball outfielder for the Tohoku Rakuten Golden Eagles in Japan's Nippon Professional Baseball.