2007 Rugby World Cup squads Pool B Japan

| Player | Position_ | Date_of_Birth_Age | Caps | Club_province |
|---|---|---|---|---|
| Ryo Yamamura | Prop | 9 August 1981 | 34 | Jubilo |
| Masahito Yamamoto | Prop | 29 May 1978 | 25 | Verblitz |
| Tomokazu Soma | Prop | 5 June 1977 | 13 | Wild Knights |
| Tatsukichi Nishiura | Prop | 20 February 1976 | 7 | West Red Sparks |
| Yuji Matsubara | Hooker | 5 September 1979 | 19 | Kobelco Steelers |
| Yusuke Aoki | Hooker | 19 June 1983 | 2 | Verblitz |
| Hitoshi Ono | Lock | 6 May 1978 | 20 | Brave Lupus |
| Takanori Kumagae | Lock | 31 May 1978 | 25 | Green Rockets |
| Luatangi Vatuvei | Lock | 8 December 1977 | 20 | Liners |
| Luke Thompson | Lock | 16 April 1981 | 5 | Liners |
| Yasunori Watanabe | Flanker | 2 June 1974 | 30 | Brave Lupus |