神奈川県出身。幼稚園から中学校までの12年間を私立和光学園に学ぶ。桐朋学園子供のための音楽教室を経て、桐朋音高、桐朋音大を卒業。在学中より国内外の様々なコンクール、オーディションに入賞。桐朋学園大学卒業後にウィーンに渡り、ウィーン国立音楽大学演奏家過程に首位入学。同課程を首席で修了し帰国。帰国後は東京藝術大学音楽学部別科に在籍し、修了後2012年より本格的な演奏活動を開始。

2012年カワイ表参道パウゼにて桐朋学園大学推薦のソロリサイタルに出演。 2014年には東北、沖縄等の地域での定期的なソロリサイタルを開始。2016年には香川県主催のコンサートにて瀬戸フィルハーモニー交響楽団とピアノ協奏曲を共演したほか、紀尾井ホール、ヤマハホールなどでもソロリサイタルを定期的に開催。オーストリアにゆかりのある作曲家の曲を中心に演奏活動を行う傍ら、後進の指導にもあたっている。また、ベーゼンドルファーピアノを使用したレクチャーコンサートや公開レッスンも多数行い好評を得ている。これまでに余村聡二郎氏、奈良場恒美氏、故ノエル・フローレス氏、ジュゼッペ・マリオッティ氏に師事。現在、ピアニストの深沢亮子女史に師事。日本音楽舞踊会議、日本演奏連盟会員。ベーゼンドルファーアーティスト。

TOMIOKA Sayaka is Japanese concert pianist born in Kawasaki City, Japan, started piano at the age of three. She graduated Toho Gakuen University after working in the music class for children attached to the University and the music department of Toho High School. During in school, she had won various competitions and auditions in Japan and overseas. In 2006 she won first prize and the best young pianist award on the ISA (Austria) Academy competition. She appeared on "ÖRF", an Austrian broadcaster, and appeared on television and radio.

Soon after graduated the University, she moved to Vienna to enter into the Post-graduate course at the University of Music and Performing Arts Vienna.(MDW) where she completed at the top. Upon returning to Japan, she was enrolled in the Department of Music, Tokyo University of the Arts before started full-scale performance activities in 2012.

Since then, she has been regularly holding solo recitals at Kioi Hall and Yamaha Hall in Tokyo, while performing on invitation from Tohoku to Okinawa, including special events for consolation after great disaster, and piano-concerto with philharmonic orchestra. While she mainly plays songs by Austrian composers, she also holds many lecture concerts and public lessons to young and old.

She has studied under Sojiro Yomura, Tsunemi Naraba, the late Noel Flores, Giuseppe Mariotti, and Ryoko Fukasawa.

Sayaka has been appointed as Official Bösendorfer Artist from July 2021.