| CABINET |
 |
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| Y.HATOYAMA 16.9.2009 - 8.6.2010 | DPJ +PNP+SDPJ(*) | ||||
| CHANGES 7.1.2010 & 10.2.2010 | |||||
| Prime Minister | Yukio Hatoyama | dpj | 16.9.2009 | - |
8.6.2010 |
| Vice Prime Minister | Naoto Kan | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of State for Economic & Fiscal Policy | Naoto Kan | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of State for National Strategy | Naoto Kan | dpj | 16.9.2009 | - |
7.1.2010 |
| Minister of State for National Strategy | Yoshito Sengoku | dpj | 7.1.2010 | - |
8.6.2010 |
| Minister of State for Science & Technology policy | Naoto Kan | dpj | 16.9.2009 | - |
7.1.2010 |
| Minister of State for Science & Technology policy | Tatsuo Kawabata | dpj | 7.1.2010 | - |
8.6.2010 |
| Min.of Internal Affairs Affairs and Communications | Kazuhiro Haraguchi | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of State for Promotion of Local Sovereignty | Kazuhiro Haraguchi | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Justice | Keiko Chiba | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Foreign Affairs | Katsuya Okada | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Finance | Hirohisa Fujii | dpj | 16.9.2009 | - |
5.1.2010 |
| Minister of Finance | Naoto Kan | dpj | 7.1.2010 | - |
8.6.2010 |
| Min.of Education,Culture,Sports,Science & Technology | Tatsuo Kawabata | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Health,Labour & Welfare | Akira Nagatsuma | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of State for Pension Reform | Akira Nagatsuma | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Agriculture,Forestry & Fisheries | Hirotaka Akamatsu | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Economy,Trade & Industry | Masayuki Naoshima | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Land,Infrastructure,Transport & Tourism | Seiji Maehara | dpj | 16.9.2009 | - |
8.6.2010 |
| Min.of State for Okinawa& North.Territories Affairs | Seiji Maehara | dpj | 16.9.2009 | - |
8.6.2010 |
| Min.of State for Disaster Management | Seiji Maehara | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Environment | Sakhito Ozawa | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of Defence | Toshimi Kitazawa | dpj | 16.9.2009 | - |
8.6.2010 |
| Chief Cabinet Secretary | Hirofumi Hirano | dpj | 16.9.2009 | - |
8.6.2010 |
| Chair of the National Public Safety Commission | Hiroshi Nakai | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of State for Civil Service Reform | Yoshito Sengoku | dpj | 16.9.2009 | - |
8.6.2010 |
| Minister of State for Government Revitalization | Yoshito Sengoku | dpj | 16.9.2009 | - |
10.2.2010 |
| Minister.of State for Government Revitalization | Yukio Edano | dpj | 10.2.2010 | - |
8.6.2010 |
| Minister of State for Financial Services & Postal Refom | Shizuka Kamei | pnp | 16.9.2009 | - |
8.6.2010 |
| Minister of State for Consumer Admin.& Food Safety | Mizuho Fukushima | sdpj | 16.9.2009 | - |
28.5.2010 |
| Minister of State for Consumer Admin.& Food Safety | Hirofumi Hirano | dpj |
28.5.2010 |
- |
8.6.2010 |
| Min.of State for Declining Birthrate & Gender Equality | Mizuho Fukushima | sdpj | 16.9.2009 | - |
28.5.2010 |
| Min.of State for Declining Birthrate & Gender Equality | Hirofumi Hirano | dpj |
28.5.2010 |
- |
8.6.2010 |
* SDPJ quitted on 28.May 2010