Haruka Tomatsu is a prominent Japanese voice actress and singer, born on February 4, 1990, in Ichinomiya, Aichi Prefecture. She is affiliated with the talent agency Music Ray'n and is also a member of the acclaimed voice actor unit Sphere. Tomatsu began her career after successfully passing a Music Ray'n audition in 2006, making her voice acting debut in 2007 with a starring role as Corticarte Apa Lagranges in the anime series Shinkyoku Sōkai Polyphonica.

Tomatsu is widely recognized for her exceptional versatility and ability to perform a wide range of character voices, often sounding unrecognizable from one role to the next. Her breakthrough came in 2008 with major roles in To Love-Ru as Lala Satalin Deviluke and in Kannagi: Crazy Shrine Maidens as the titular character, Nagi. She has since become one of the most successful and sought-after voice actresses in Japan, consistently securing main roles each season. Among her most iconic and enduring performances is Asuna Yuuki in the globally popular Sword Art Online franchise, a role fans often cite as her most representative.

Her career is marked by a steady stream of major roles across a diverse spectrum of anime. In addition to those listed, she is well known as Naruko "Anaru" Anjō in Anohana: The Flower We Saw That Day, Morgiana in Magi: The Labyrinth of Magic, Zero Two in Darling in the Franxx, Haru Okumura in the Persona 5 animations, and Keita Amano in the long-running children's series Yo-kai Watch. The extensive list of roles provided, including Seri Kikyō in Call of the Night, Elf in Uncle From Another World, Eina Tulle in the Is It Wrong to Try to Pick Up Girls in a Dungeon? series, Kyoko Hori in Horimiya, and Sumireko "Pansy" Sanshokuin in ORESUKI: Are you the only one who loves me?, accurately reflects the breadth of her work in the industry.

Tomatsu has received critical acclaim and industry recognition for her performances. She won the Best Rookie Actress Award at the 3rd Seiyu Awards in 2009 and the Best Supporting Actress Award at the 7th Seiyu Awards in 2013. In 2015, she also received the Synergy Award at the 9th Seiyu Awards for her role in Yo-kai Watch.

Alongside her voice acting, Tomatsu enjoys a successful solo singing career and is a member of the popular voice actor unit Sphere, formed in 2009 with fellow Music Ray'n talents Aki Toyosaki, Minako Kotobuki, and Ayahi Takagaki. She has released multiple solo albums and singles, many of which have been used as theme songs for the anime series in which she stars, such as "Yume Sekai" and "Courage" for Sword Art Online.