Kaori Oinuma (老沼 カオリ, Oinuma Kaori; born July 22, 2000) is a Filipino-Japanese actress and model known for being a finalist in Philippine reality television series, Pinoy Big Brother: Otso. She is best known for her role as Michiko in the iWantTFC original series, He's Into Her (2021). She is also a part of the first batch of stars under Rise Artists Studio, a talent management arm of ABS-CBN Films.

Oinuma was born on July 22, 2000, in Nagoya, Japan to a Filipino mother and a Japanese father. She lived in Japan until she was 4 years old before moving to the Philippines. Oinuma has two half-siblings and a stepfather in the Philippines. When she was 13, her mother grabbed the opportunity of migrating to Japan with her after a friend of theirs, whose mom works in an agency, told them about the support offered to women who have half-Japanese children.

In high school, she became a varsity player of their school's basketball team. And during summer breaks, she worked on part-time jobs in order to help her mom with their finances.

In July 2023, she graduated from senior high school in Bartolome Sangalang National High School in Guimba, Nueva Ecija. Thereafter, she pursued college at Philippine Women's University taking up a degree in Psychology. She is one of Boy Abunda's scholars.

In 2018, Oinuma was first seen in television as she became an official housemate of reality TV show Pinoy Big Brother: Otso, where she emerged as the eighth Big Placer.

Before venturing into acting, she took part in the Star Hunt Academy Boot Camp (the exact program that created the now known P-pop groups, BINI and BGYO) but could not complete the training program.

In later part of 2019, Oinuma got her first television role as a cast in Parasite Island. A year later, she had some acting stints in Maalala Mo Kaya: Mata and Philippine television sitcom Home Sweetie Home Extra Sweet.

She was launched as one of the first batch of artists under Rise Artist Studio, a talent management arm of ABS-CBN Films, in February 2020.