Nanase Matsuoka is a Japanese voice actor and singer known primarily for her work within the Aikatsu! multimedia franchise. She is recognized as a member of the vocal unit AIKATSU☆STARS!, a group formed to perform insert songs and provide singing voices for characters in the Data Carddass Aikatsu! game and its related anime series starting from 2015. Unlike traditional voice actors who provide character dialogue, Matsuoka specializes in voice performance for musical sequences, serving as the singing voice for multiple characters across the Aikatsu! universe.

In the original Aikatsu! television series, Matsuoka provided the singing voice for the characters Lisa Shirakaba and Rin Kurosawa. Her role as the singing voice for Rin Kurosawa continued in the 2015 film Aikatsu! Music Award: We all get a prize SHOW! and the 2016 short film Aikatsu! Aiming For the Magic Aikatsu Card. Her work as Lisa Shirakaba's singing voice extended to the 2025 crossover film Aikatsu! x PriPara THE MOVIE -Deai no Kiseki!-.

With the launch of Aikatsu Stars! in 2016, Matsuoka expanded her presence within the franchise significantly. She served as the singing voice for three characters from that series: Koharu Nanakura, Tsubasa Kisaragi, and Lilie Shirogane. Her role for Tsubasa Kisaragi's singing voice continued in the 2016 theatrical film Aikatsu Stars! The Movie. Across the various Aikatsu! television series, Matsuoka's vocal performances span over 150 episodes.

Beyond her work in animated productions, Matsuoka performed as Izumi Hinasaki in the 2021 stage production GEKIDOL the STAGE, demonstrating her versatility as a live performer. Her career is defined by a consistent and long-standing collaboration with the Aikatsu! franchise, where she has contributed as a core member of AIKATSU☆STARS! alongside other featured vocalists including Ruka Endō, Miki Mirai, Miho Amane, and Kana Hoshizaki. Her body of work represents a specialization in singing voice performance for the idol genre of anime, with no information available regarding spoken voice acting roles or personal biographical details.