Ruriko Aoki is a Japanese voice actress born on March 24, 1990, in Saitama Prefecture. She is affiliated with the talent agency Atomic Monkey. Aoki is a graduate of Hosei University's Faculty of Sociology, where she majored in Media Society. Her path to voice acting began in 2009 when she was one of the successful candidates in the third Seiyuu Award Newcomer Discovery Audition, subsequently joining her current agency. Her early career involved significant work as a radio host and assistant before she began securing roles in anime.

Aoki's filmography is extensive, featuring a wide array of characters across various anime series. She is widely recognized for her role as Riina Tada in the popular The Idolmaster Cinderella Girls franchise, a part she has voiced in multiple adaptations, including The IDOLM@STER Cinderella Girls and Cinderella Girls Theater. Another prominent and recurring role is that of the racehorse character Air Groove in the multimedia hit Uma Musume Pretty Derby and its subsequent seasons and specials. Her other notable anime roles include Nene Onemine in Komi Can't Communicate, Juri Kikuchi in PuraOre! Pride of Orange, Mu Yurou in Xuan Yuan Sword Luminary, Katrina in RoboMasters The Animated Series, Yūko Kōzuki in Muv-Luv Alternative, Kil Zonne in Lucifer and the Biscuit Hammer, Haruka in the web anime Naniiro no Nani, Priscilla Twilight in Day Break Illusion, Dario in Meiji Gekken: 1874, and Meiko Maiden in Beyblade X.

Beyond anime, Aoki has lent her voice to a substantial number of video games. Her roles in this medium are diverse, including Tressa in Octopath Traveler, Marin in Hyrule Warriors Legends, Marni in Fire Emblem Engage, and various characters in long-running mobile games like Girls' Frontline and Azur Lane. Her performance as Riina Tada also led to a music career within the franchise, with her character single charting in the top ten on the Oricon Weekly Singles Chart.

Aoki is known for her deep passion for video games, particularly The Legend of Zelda series, which she has cited as an all-time favorite. This interest has led to her hosting her own game streaming program and appearing as a guest at official Nintendo events, such as The Legend of Zelda 30th Anniversary concert. She is also an active user of social media and runs a YouTube channel focused on gaming content, connecting directly with her audience. Throughout her career, she has frequently collaborated with other voice actresses, with notable frequent co-stars including大桥彩香, 内田真礼, and 福原绫香.