The 2004 Rally Japan (formally the Rally Japan 2004) was the eleventh round of the 2004 World Rally Championship season.

The race was held over three days between 3 September and 5 September 2004, and was based in Obihiro, Japan.

Subaru's Petter Solberg won the race, his 8th win in the World Rally Championship.

[1] All dates and times are JST (UTC+9).