The 2004–05 Japan Figure Skating Championships was the Japan Figure Skating Championships of the 2004–05 season. They were the 73rd Japan Championships to be held. They were held at the Shinyokohama Stake Center in Yokohama, Kanagawa Prefecture from December 24 through 26, 2004. The competition was used to decide Japan's entries to the 2005 World Championships and the 2005 Four Continents Championships. The entries to the 2005 World Junior Championships were decided at the Japanese Junior Championships.
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Skaters competed on the senior level in the disciplines of men's singles, ladies' singles, pair skating, and ice dancing.
Japan Junior Figure Skating Championships
The 2004–05 Japan Junior Figure Skating Championships took place between November 20 and 21, 2004 at the Osaka Pool arena in Osaka.
World Championships
Following the national championships, Honda, Arakawa, and Ando were assigned to the World team. All other places were filled following the 2005 Four Continents Championships, with the highest placing Japanese skater earning the available Worlds spot.