Joji Takeuchi (竹内 譲次、born January 29, 1985, in Suita, Osaka, Japan) is a Japanese professional basketball player.

[1] Takeuchi's twin brother Kosuke is also a member of the Japanese national basketball team.

[2] As a 21-year-old, Takeuchi averaged 6.2 points and 5.2 rebounds per game for the host Japanese at the 2006 FIBA World Championship.

[3] Takeuchi has earned a bigger role with the Japanese team over the past four years; his best tournament performance to date was at the FIBA Asia Championship 2009, in which he averaged 9.8 points and 7.2 rebounds per game.

In the 2009–10 season, Takeuchi entered the month-long winter break averaging 16.1 points and 9.4 rebounds per game for the third-place Seahorses.