| Hideki Asai | |
| Position: | Pitcher |
| Birth Date: | 1 January 1984 |
| Birth Place: | Higashisumiyoshi-ku, Osaka, Japan |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | NPB |
| Debutdate: | September 24 |
| Debutyear: | 2003 |
| Debutteam: | Osaka Kintetsu Buffaloes |
| Finalleague: | NPB |
| Finaldate: | October 5 |
| Finalyear: | 2010 |
| Finalteam: | Yomiuri Giants |
| Statleague: | NPB |
| Stat1label: | Win–loss record |
| Stat1value: | 25-33 |
| Stat2label: | Earned run average |
| Stat2value: | 4.09 |
| Stat3label: | Strikeouts |
| Stat3value: | 378 |
| Stat4label: | Saves |
| Stat4value: | 0 |
| Stat5label: | Holds |
| Stat5value: | 4 |
| Teams: |
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is a Nippon Professional Baseball pitcher for the Yomiuri Giants in Japan's Central League.