Rich Girl Caretaker: I'm Secretly the Caregiver of the Most Popular Girl in This Rich Kid School (才女のお世話 高嶺の花だらけな名門校で、学院一のお嬢様（生活能力皆無）を陰ながらお世話することになりました, Saijo no Osewa: Takane no Hana-darake na Meimonkō de, Gakuin-ichi no Ojō-sama (Seikatsu Nōryoku Kai Mu) o Kage nagara Osewa suru Koto ni Narimashita) is a Japanese light novel series written by Yusaku Sakaishi and illustrated by Sakura Miwabe.

The series began as a web novel posted on the Shōsetsuka ni Narō website between April 2020 and October 2021, before Hobby Japan began publishing it in print under their HJ Bunko imprint in May 2021.

The series follows Itsuki Tomonari, a high school student who comes from a poor family who is suddenly abandoned by his parents.

[4] A promotional video with Moe Toyota voicing Hinako was posted on YouTube on September 20, 2021.

A manga adaptation illustrated by Sorahiko Mizushima began serialization on Hobby Japan's Comic Fire website on July 2, 2021, with the first volume being released on June 1, 2022.