Hideki Matsutake (born August 12, 1951 in Yokohama, Kanagawa Prefecture, Japan) is a Japanese composer, arranger, and computer programmer.

He also continued to take part in solo activities by YMO members such as Haruomi Hosono and Yukihiro Takahashi beyond the group's breakup in 1983.

Matsutake was grabbed by the playback of Wendy Carlos's Switched-On Bach using a synthesizer and a computer at the American Pavilion of Expo '70 in Osaka.

In June the following year at age 19, he made his first step into professional music as an apprentice to Isao Tomita, providing him the chance of operating one of the few Moog III-P synthesizer units in Japan.

In the years 1978 to 1982, Matsutake served Yellow Magic Orchestra as its sound programmer, eventually to become known as the "fourth member" of the band.