Tenshi Ja Nai!! is a Japanese manga series written and illustrated by Takako Shigematsu. It was serialized in Princess magazine from February 2003 to May 2006 and published in eight tankōbon volumes by Akita Shoten. In North America, the manga was published by Go! Comi from October 2005 to September 2007; it went out-of-print when the company shut down in 2010.

Takako Shigematsu is a Japanese manga artist best known for her manga series Tenshi Ja Nai!! Her first manga, published in 1995, told the tale of an all-boys dorm. However, it wasn't until her 2002 release of Taiyō Made 3m that she truly stepped into the spotlight as a professional manga artist. Since then, she has worked on several series, including Tenshi Ja Nai!!, King of the Lamp, and Ultimate Venus, all three of which were published in North America by Go! Comi before the imprint shut down in 2010. Takako is also known for her pet pug, Molly, who is mentioned in most of her manga.