D4 Princess (D4プリンセス, D4 Princess?) is a manga series created by Shotaro Harada (原田将太郎, Harada Shōtarō?). The story was adapted into an anime series. The anime is composed of 24 thirteen-minute episodes and is part of the anime program Anime Complex II; it ran from April 6 to September 28, 1999.

Despite its light-hearted nature and its humanistic climax, it is chided by some Internet anime critics for its slow pacing and its even slower story development, which is partly the reason it has yet to be licensed in North America despite its age.