Tsukihime (月姫, Tsukihime, Princesa da Lua, Moon Princess) is a Japanese eroge doujin visual novel game created by TYPE-MOON, which was originally released in December 2000. It was adapted in 2003 into an anime series, Shingetsutan Tsukihime, produced by J.C. Staff and Geneon, and a manga series, which has been serialized since 2004 in MediaWorks's shounen magazine Dengeki Daioh, completed in ten volumes.

It has only been officially released in Japan, but an English translation patch for Tsukihime was made by mirror moon, a TYPE-MOON fan translation group, on November 5, 2006. The patch translates the entirety of the original Japanese text to English.