Based on Forbes Japan's Richest 2007
| # | Name | Age | Net Worth | Source of Wealth | Notes |
|---|---|---|---|---|---|
| 1 | Akira Mori | 69 | US$5.5 billion | Mori Trust | |
| 2 | Masayoshi Son | 49 | US$5.45 billion | Softbank | |
| 3 | Hiroshi Yamauchi | 79 | US$4.8 billion | Nintendo | |
| 4 | Kunio Busujima | 82 | US$4.3 billion | Sankyo | |
| 5 | Hiroko Takei | 65 | US$4 billion | Takefuji | The late Yasuo Takei's family |
| 6 | Nobutada Saji | 61 | US$3.9 billion | Suntory | |
| 7 | Eitaro Itoyama | 65 | US$3.8 billion | Shin Nihon Kanko | |
| 8 | Tadashi Yanai | 58 | US$3.6 billion | Fast Retailing | |
| 9 | Takemitsu Takizaki | 62 | US$2.7 billion | Keyence | |
| 10 | Masatoshi Ito | 83 | US$2.6 billion | Ito Yokado | |
| 11 | Yoshitaka Fukuda | 59 | US$2.5 billion | Aiful | |
| 12 | Kinoshita brothers | US$2.37 billion | Acom | Kyosuke , Shigeyoshi Kinoshita|Shigeyoshi and Katsuhiro Kinoshita | |
| 13 | Hiroshi Mikitani | 42 | US$2.2 billion | Rakuten | |
| 14 | Kazuo Okada | 64 | US$2.1 billion | Aruze | |
| 15 | Fukuzo Iwasaki | 82 | US$2 billion | Iwasaki Sangyo | |
| 16 | Toichi Takenaka | 64 | US$1.9 billion | Takenaka Corporation | |
| 17 | Masahiro Miki | 51 | US$1.8 billion | ABC-Mart | |
| 18 | Kanbei Kokubu | 68 | US$1.7 billion | Kokubu | |
| 19 | Ryoichi Jinnai | 80 | US$1.4 billion | Promise | |
| 20 | Yasumitsu Shigeta | 42 | US$1.37 billion | Hikari Tsushin | |
| 21 | Tetsuro Funai | 80 | US$1.34 billion | Funai Electric | |
| 22 | Shigenobu Nagamori | 53 | US$1.3 billion | Nidec | |
| 23 | Kenshin Oshima | 59 | US$1.2 billion | SFCG | |
| 24 | Minoru & Yuji Otsuka | 84/53 | US$1.16 billion | Otsuka Corporation | |
| 25 | Han Chang-Woo | 76 | US$1.16 billion | Maruhan | |
| 26 | Hajime Satomi | 65 | US$1.14 billion | Sega Sammy Holdings | |
| 27 | Soichiro Fukutake | 61 | US$1.11 billion | Benesse | |
| 28 | Tadahiro Yoshida | 60 | US$1.1 billion | YKK | |
| 29 | Chizuko & Michio Matsui | 52/54 | US$1.09 billion | Matsui Securities | |
| 30 | Kazuo Inamori | 75 | US$1 billion | Kyocera | |
| 31 | Yasuhiro Fukushima | 59 | US$900 million | Square Enix | |
| 32 | Shosuke Idemitsu | 79 | US$895 million | Idemitsu Kosan | |
| 33 | Shoichiro Toyoda | 82 | US$800 million | Toyota Motor Corporation | |
| 34 | Keiko & Yoichi Erikawa | 58/56 | US$780 million | Koei | |
| 35 | Yusuke Miyama | 61 | US$775 million | Leopalace21 | |
| 36 | Shoji Uehara | 79 | US$770 million | Taisho Pharmaceutical | |
| 37 | Ryuji Arai | 61 | US$730 million | Bic Camera | |
| 38 | Nobutoshi Shimamura | 71 | US$650 million | Shimamura | |
| 39 | Etsuko & Gen Fujita | 77/NA | US$630 million | The late Den Fujita's family | |
| 40 | Akio Nitori | 63 | US$610 million | Nitori |
Forbes.com: Japan's 40 Richest:
|
||||||||||||||||||||