Noriko Rikimaru is a Japanese voice actress and narrator born on January 20 in Tokyo, Japan. Sources differ on her birth year, with some listing 1967 and others 1976. She is currently a freelance talent. Rikimaru is known for her纤细 (slender or delicate) vocal quality and frequently casts in roles depicting gentle or柔弱 (fragile) young women. Her hobbies include collecting erasers, watching movies, and bungee jumping.

Her career spans numerous anime television series, OVAs, and video games. She is particularly recognized for her long-running role as Manaka Komaki across multiple adaptations and sequels in the To Heart 2 franchise, including the television anime, ToHeart2, and the OVAs ToHeart2ad, ToHeart2 adnext, and the game ToHeart2 Dungeon Travelers. Another significant role is樱田纪 (Nori Sakurada) in the Rozen Maidenseries and its subsequent installments. In the series Tayutama - Kiss on My Deity, she voices the character Mashiro Mito. Her other notable television roles include the Class President in Seto no Hanayome, Miu Amaha in Mashiroiro Symphony -The color of lovers-,橘菊理 (Kukuri Tachibana) in 11eyes, and Sister Claire in Chrono Crusade. In the adult game Stringendo - Angel-tachi no Private Lesson, she is credited under a pseudonym for the role of Mikura.

Throughout her career, Rikimaru has frequently collaborated with a consistent group of fellow voice actors. She has worked on multiple projects with伊藤静 (Shizuka Ito),福山润 (Jun Fukuyama),桑谷夏子 (Natsuko Kuwatani), and佐藤利奈 (Rina Satou).

Rikimaru has also worked extensively in adult video games, often using various pseudonyms. These aliases have included松田理沙 (Risa Matsuda),木葉楓 (Kaede Konoha),畠山美夏 (Mika Hatakeyama),桥野さやか (Sayaka Hashino), and桐島やよい (Yayoi Kirishima). Her work under these names is noted for featuring intense performances. In addition to her animation and game work, she has also contributed to drama CDs for series such as IZUMO, Chrono Crusade, and To Heart 2.