| Hiroaki Saiuchi | |
| Position: | Pitcher |
| Birth Date: | 19 July 1993 |
| Birth Place: | Amagasaki, Hyogo |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | NPB |
| Debutdate: | September 2 |
| Debutyear: | 2012 |
| Debutteam: | Hanshin Tigers |
| Finalleague: | NPB |
| Finaldate: | October 30 |
| Finalyear: | 2020 |
| Finalteam: | Tokyo Yakult Swallows |
| Statyear: | 2020 season |
| Stat1label: | Win–loss record |
| Stat1value: | 3-6 |
| Stat2label: | ERA |
| Stat2value: | 4.18 |
| Stat3label: | Strikeouts |
| Stat3value: | 76 |
| Teams: |
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Hiroaki Saiuchi (Japanese 歳内 宏明; born 7 July 1993) is a Japanese professional baseball player who currently plays for the Tokyo Yakult Swallows of Nippon Professional Baseball.[1]