History of rugby union matches between Japan and Wales
The national rugby union teams of Wales and Japan have met 10 times in senior international matches, of which Wales have won nine and Japan one. Most of these matches have been played in Wales, but they have played one another three times in a Rugby World Cup tournament, in 1995, 1999 and 2007. The 2004 meeting between the two sides resulted in Wales' biggest ever victory, a 98–0 win in which they scored 14 tries, including hat-tricks from Colin Charvis and Tom Shanklin, all converted by Gavin Henson.
The sides also met on four occasions between 1973 and 1983 in games for which Wales did not award full international caps, all of which were won by Wales. The last of those four matches, in 1983, produced the closest margin in all games between the teams, a 29–24 win by Wales.
Summary
Overall
Records
Note: Date shown in brackets indicates when the record was or last set.Results
XV results
Below are a list of matches that Japan has awarded matches test match status by virtue of awarding caps, but Wales did not award caps.| Date | Venue | Score | Winner | Comments |
| 6 October 1973 | Cardiff Arms Park, Cardiff | 62–14 | Not classed as a full international by Wales who fielded an Wales XV, not the 1st XV | |
| 21 September 1975 | Kintetsu Hanazono Rugby Stadium, Osaka | 12–56 | Not classed as a full international by Wales, who fielded an Wales XV, not the 1st XV | |
| 24 September 1975 | Tokyo Olympic Stadium, Tokyo | 6–82 | Not classed as a full international by Wales, who fielded an Wales XV, not the 1st XV | |
| 22 October 1983 | Cardiff Arms Park, Cardiff | 29–24 | Not classed as a full international by Wales, who fielded an Wales XV, not the 1st XV |