| Hiroo Ishii | |
| Position: | First baseman |
| Birth Date: | 1964 6, df=yes |
| Birth Place: | Akita Prefecture |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | NPB |
| Debutdate: | May 8 |
| Debutyear: | 1990 |
| Debutteam: | Kintetsu Buffaloes |
| Finaldate: | October 4 |
| Finalyear: | 2002 |
| Finalteam: | Yokohama BayStars |
| Statleague: | NPB |
| Stat1label: | Batting average |
| Stat1value: | .289 |
| Stat2label: | Home runs |
| Stat2value: | 162 |
| Stat3label: | Runs batted in |
| Stat3value: | 536 |
| Teams: | |
is a Japanese retired baseball player and politician from the Liberal Democratic Party of Japan. He currently serves as member of the House of Councillors for Akita at-large district.[1]