TiA (ティア) is a singer from the label Sony Music Japan. She debuted with her single "Every Time" in 2004. Her second single, "Ryuusei," was used for the 6th ending theme of the anime "Naruto."

After releasing one more single ("Negai"), her first studio album, "Humming" was released in December 2004.

Since then she has released two more singles ("Promise" and "zutto zutto…").