Suppli (サプリ, Sapuri, lit. "Supplement") is a Japanese manga series written and illustrated by Mari Okazaki. It was published by Shodensha's josei manga magazine Feel Young from October 8, 2003, to November 7, 2009; a sidestory also ran in the magazine in 2010. It has been collected in seven volumes so far, and was published in English by Tokyopop who released five volumes in English. Suppli was adapted into a Japanese drama series which aired in Japan on Fuji TV in summer 2006. It stars Misaki Itō, Kazuya Kamenashi, Eita, and Miho Shiraishi.

Minami is a 27-year-old female office worker in an advertisement agency. Though she has a boyfriend, she spends the majority of her time working and appears to feel ambivalent about the relationship at best. When the boyfriend finally breaks up with her, it's the push she needs to start a social life with her co-workers. In-office romances soon follow. Much of the story is told through Minami's thoughts, which are full of self-doubt.