Zaq (stylized as ZAQ, born March 16, 1988) is a female Japanese singer-songwriter signed to Lantis.
Zaq began to learn the piano at age three. During her college years, her idol was Minori Chihara, and it was during this time she decided to become a singer. However, she failed all her auditions. In junior high school, Zaq's favorite bands were Mongol800 and Going Steady, two rock groups which she was addicted to. She is self-taught in composing and her works were characterized by a unique style which is unrestricted by music theory and musicology.
She started writing songs for other artists in 2012, and made her solo debut with Lantis with the single "Sparkling Daydream" released on October 24, 2012; the title song is used as the opening theme to the 2012 anime series Chūnibyō Demo Koi ga Shitai!. Her second single "Alteration" was released on January 23, 2013 and the title song is used as the opening theme to the 2013 anime series Sasami-san@Ganbaranai.