Project DMM (Ｐｒｏｊｅｃｔ　ＤＭＭ, Purojekuto Dī Emu Emu) is a Japanese musical group that primarily performs theme songs for Tsuburaya Productions' Ultra Series of tokusatsu programs. Its members are Kazuya Daimon (大門一也, Daimon Kazuya), Tsuyoshi Matsubara (松原剛志, Matsubara Tsuyoshi), and KATSUMI. Tatsuya Maeda (前田達也, Maeda Tatsuya) had originally been a part of Project DMM, but left in 2000 and was replaced by KATSUMI. The group disbanded during 2009.