Hiroshi Kitadani (きただにひろし, Kitadani Hiroshi, August 24, 1968) is a Japanese vocalist who is prominent as an anison, or a musician who primarily performs theme songs and other songs in anime. He also works behind the scenes of many songs. He currently works with JAM Project, but has also been a part of Lapis Lazuli and Stagger and does solo work. He is known for singing "We Are!" the first opening theme of One Piece and the eponymous first opening theme of Madan Senki Ryukendo. His latest song is the "We Go!", which was used as the 15th opening song of the anime: ONE PIECE.