| Order: | 18th Mayor of Osaka |
| Term Start: | 19 December 2007 |
| Term End: | 18 December 2011 |
| Predecessor: | Junichi Seki |
| Successor: | Tōru Hashimoto |
| Birth Date: | 15 November 1948 |
| Birth Place: | Amagasaki, Hyogo Prefecture |
| Nationality: | Japanese |
| Party: | none |
| Alma Mater: | Doshisha University Law School |
| Occupation: | television personality, Mainichi Broadcasting System |
| Profession: | Announcer |
| Website: | http://www.hiramatsu-osaka.com/ |
was the mayor of Osaka in Japan. He was elected in 2007 with centre-left support from the Democratic Party of Japan (DPJ), People's New Party and the Social Democratic Party, defeating the centre-right supported incumbent Jun'ichi Seki by 50,000 votes.
Hiramatsu unsuccessfully ran for re-election in Osaka's mayoral election on 27 November 2011,[1] when his challenger was the former Osaka Governor Tōru Hashimoto.[1] Despite support from both major Japanese national parties (the DPJ and the Liberal Democratic Party), and the Japanese Communist Party retracting their candidate to support his re-election bid, Hiramatsu lost to Hashimoto by a margin of well over 200,000 votes.