Taiji Nishitani (????, Nishitani Taiji, born 1 February 1981, in Hiroshima Prefecture) is a Japanese professional racing cyclist who currently rides for the Aisan Racing Team.
He joined Aisan soon after graduating from Nihon University and has had success on the UCI Asia Tour.
He was the third Japanese to win a stage at the HC classified Tour de Langkawi.
In addition to road races, Nishitani has also represented Japan in international track cycling competitions, riding in such events as the scratch race, Madison, and omnium.
He was the national road champion in 2009.
He retired at the end of the 2014 season, and became the technical director for Aisan.