"D.D.D." is a song recorded by Japanese recording artist Kumi Koda, taken from her second greatest hits album, Best ~second session~ (2005). It contains guest vocals from Japanese music duo Soulhead. It was written by Soulhead members and sisters Yoshika and Tsugumi, with production being done by Octopussy. The song is Kumi's first collaborative effort since her single "Hot Stuff" with Japanese rapper KM-MARKIT, which was released a month prior. As part of Kumi's 12 Singles Collection releases, "D.D.D." premiered on December 21, 2005 as the third single from the album. The CD cover sleeve has Kumi wearing a black mini-dress and headdress. The cover sleeve is to represent the country United Kingdom, and its symbolism of Britannia.