is the third single released by the Japanese techno-pop group Perfume, and the first single in which they were produced by Yasutaka Nakata. It appears as a track on the group's debut album, '.
Since their 2005 major debut, the original single has been difficult to find and can be found on auction sites for more than double its original price. In February 2008, it was re-released and included in the "Fan Service -Prima Box-" CD+DVD boxset.
The cover of "Jenny wa Gokigen Naname" became one of Perfume's staple songs, being performed on many of their major tours.