Kōji Ueno (上野 耕路, Ueno Kōji, born February 1, 1960 in Chiba Prefecture) is an award-winning Japanese composer, musician, arranger and keyboardist. He is noted for his unique style of music.
He graduated from Nihon University's department of music at its faculty of art, and in 1978, began his career in music with his first music ensemble, 8&1/2, after which he worked with the group Halmens between 1979 and 1981. In 1980, Ueno formed the musical group Guernica, noted for its unique form of avant garde music, along with vocalist Jun Togawa and lyricist Keichi Ohta.
In the 1980s, Ueno worked with renowned composer Ryuichi Sakamoto on the soundtracks of the films Koneko Monogatari, Oritsu Uchūgun - Oneamisu no Tsubasa, and The Last Emperor. In 2004, he composed the music for the lauded Takashi Nakamura-directed anime TV series, Fantastic Children.
Ueno has recently formed the musical group Netszo & Gansaku, with the first album, Polarity Integration released by Sony Music on April 2007.