Rena Nounen is a Japanese actress and photo model from Kamikawa, Hyogo Prefecture. She is best known for her lead roles in the NHK drama series Amachan (2013).

She made her debut as a photo model in 2006 and was chosen as the eleventh image character for Calpis in 2012. In 2012 she was selected from an audition of 1,953 women for the lead role in the 2013 NHK morning drama Amachan, in which she plays a high school girl who decides to become an ama, or female shell diver, as well as an idol. Amachan was a ratings success, averaging 20.6% over the course of its run, trailing among morning dramas of the past decade only Umechan-sensei (20.7%). Nounen was the "PR ambassador" of the 64th Kohaku Uta Gassen in 2013 and was a featured performer on the show, singing and leading the group.

In July 2016 it was announced that she had changed her stage name to "Non." In August 2017 she founded the music label "KAIWA(RE)CORD" and will begin producing full-fledged music.