Kanako Miyamoto is a Japanese actress, voice actress, and singer born on November 4, 1989, in Tsuchiura City, Ibaraki Prefecture, Japan. She is affiliated with the talent agency Axlone. Her early interest in performing was encouraged by her mother, leading her to join the Toei Academy talent school while in elementary school. She later graduated from the musical department of Toho Gakuen College of Arts, which provided a foundation for her work in musical theatre and voice acting.

Miyamoto began her entertainment career in stage musicals, including a production of Anne of Green Gables, before expanding into voice acting and singing. Her professional activities have encompassed live-action television appearances and performances as a children's show song sister. She also joined the chorus group Young Fresh, contributing to various anime soundtracks.

Her voice acting career gained momentum in the late 2000s with roles such as Kasumi Miyabe in Anyamaru Tantei Kiruminzū in 2009 and Reira Himenokōji in Cookin' Idol Ai! Mai! Main!. The year 2011 saw her voicing Rene Collette in Last Exile: Fam, the Silver Wing and Kō Sawatari in the Tamayura series, a role she would reprise in subsequent installments including Tamayura: More Aggressive and the Tamayura: Sotsugyō Shashin films. In 2012, she voiced Meido in the film Fusé: Memoirs of a Huntress and Mikoto in the Tanken Driland television series.

A significant turning point in her career arrived in 2013 when she was cast as Makoto Kenzaki, also known as Cure Sword, in the popular television series DokiDoki! PreCure. This role became her most iconic and established her as a prominent figure within the long-running Pretty Cure franchise. She reprised the character in numerous subsequent franchise installments, including the films Pretty Cure All Stars New Stage 2: Friends of the Heart, DokiDoki! PreCure the Movie: Mana's Getting Married!!? The Dress of Hope that Connects to the Future, Pretty Cure All Stars New Stage 3: Eternal Friends, and the 2018 crossover film Hugtto! PreCure ♡ Futari wa Pretty Cure: All Stars Memories. Also in 2013, her filmography expanded with roles as Rasha in Lupin III: Princess of the breeze ~Kakusareta Kūchū Toshi~, Shakki in Tanken Driland - 1000-nen no Mahō -, and Ayumi Watanabe in Red Data Girl.

Concurrent with her acting career, Miyamoto has maintained an active and successful career as a singer, particularly in association with the Pretty Cure franchise. Her solo debut came in 2007 with the song Kirakira Shichatte My True Love! from Yes! Pretty Cure 5. She has performed numerous theme songs for the series, including both ending themes for Kirakira PreCure a la Mode in 2017 and the opening theme We can!! Hugtto! PreCure in 2018. Her work as a singer has also led to unique on-screen appearances, such as a cameo in a 2017 episode of Kirakira PreCure a la Mode alongside fellow theme song performer Yuri Komagata. Beyond the franchise, she has released solo albums and character song CDs, with several of her singles and albums appearing on the Oricon weekly charts.

Following a period of hiatus due to health reasons, Miyamoto returned to voice acting and has continued to take on diverse roles. These include Miki Sasashita in Hanebad! in 2018, Koma in SSSS.GRIDMAN also in 2018, and the character Rico in the 2019 anime adaptation of Ascendance of a Bookworm. Her filmography also lists a role in the 2025 series Cat Tales. She has also contributed her voice to video games, such as God Eater and Grimms Notes.

Throughout her career, Miyamoto has been recognized for her versatility and energy as both a performer and singer. Her association with the Pretty Cure franchise remains a defining element of her professional identity, with her portrayal of Cure Sword being particularly well-received by fans. She holds a level four certification from the National Riding Club Association of Japan and, notably, passed the childcare worker certification exam in 2015.