All-Japan GT Championship 2003
Top 10 drivers
Class GT500
| 1 |  Michael Krumm |
86 |
| 1 |  Satoshi Motoyama |
86 |
| 3 | Juichi Wakisaka 2 wins |
83 |
| 3 | Akira Iida 2 wins |
83 |
| 5 |  Richard Lyons 1 win |
65 |
| 5 | Masami Kageyama 1 win |
65 |
| 7 | Yuji Ide 2 wins |
64 |
| 7 |  Benoit Treluyer 2 wins |
64 |
| 9 | Takeshi Tsuchiya |
61 |
| 9 | Erik Comas |
61 |
Class GT300
| 1 | Masataka Yanagida |
77 |
| 1 | Mitsuhiro Kinoshita |
77 |
| 3 | Keita Sawa 2 wins |
72 |
| 4 | Kazuyuki Nishizawa 1 win |
72 |
| 4 | Shinichi Yamaji 1 win |
72 |
| 6 | Takayuki Aoki 2 wins |
63 |
| 6 | Minoru Tanaka 2 wins |
63 |
| 8 | Saturo Gotou 1 win |
61 |
| 8 | Kota Sasaki 1 win |
61 |
| 10 | Kazuki Hoshino |
61 |
| 10 | Tadao Uematsu |
61 |
Race calendar
| No. | Date | Circuit | Winner | Note |
|---|---|---|---|---|
| 1 | Okayama |
GT500: J. Wakisaka / A. IidaGT300: A. Yogo / A. Asai |
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| 2 | Fuji |
GT500: R. Lyons / M. KageyamaGT300: S. Yamaji / K. Nishizawa |
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| 3 | Sugo |
GT500: J. Wakisaka / A. IidaGT300: K. Sasaki / S. Gotou |
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| 4 | Fuji |
GT500: B. Treluyer / Y. IdeGT300: E. Yamada / T. Kinoshita |
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| 5 | Fuji |
GT500: R. Michigami / S. PhilippeGT300: T. Aoki / M. Tanaka |
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| 6 | Motegi |
GT500: D. Ito /  T. CoronelGT300: K. Sawa / T. Kataoka |
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| 7 | Kamitsue (Autopolis) |
GT500: D. Schwager / M. OridoGT300: K. Sawa / T. Kataoka |
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| 8 | Suzuka |
GT500: B. Treluyer / Y. IdeGT300: T. Aoki / M. Tanaka |
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