Nami Tamaki is primarily known as a pop singer who has also taken on a small number of acting and voice acting roles. She was born in Wakayama Prefecture, Japan, on June 1, 1988, and began her entertainment career in the early 2000s. Her professional breakthrough came as a teenager with her debut single Believe in 2003, which was used as a theme song for the anime Mobile Suit Gundam SEED. While her career is largely defined by her success as a recording artist, she has occasionally appeared in live-action and voice roles.

In the realm of anime voice acting, Tamaki is best known for her role as Nobuko Ishihara in the romantic comedy series Lovely Complex, which aired in 2006. Her performance in this live-action film adaptation of the popular manga and anime marked her debut as an actress. Beyond this prominent role, her voice acting credits are limited. She made a guest appearance as a voice actor for the NHK anime Agatha Christie's Great Detectives Poirot and Marple early in her career. Additionally, she provided the voice for a character based on herself, the "mysterious diva" Nami Tamaki, in the 2005 PlayStation 2 role-playing game Radiata Stories from Square Enix.

A recurring theme in Tamaki's contributions to the anime industry is her musical work for the Gundam franchise. Her frequent collaborations have earned her the informal nickname of the Gundam songstress due to providing multiple theme songs for series such as Mobile Suit Gundam SEED and Mobile Suit Gundam SEED DESTINY. While her professional achievements include receiving the New Artist of the Year award at the Japan Gold Disc Award in 2004 and having multiple number-one albums on the Japanese music charts, her recognition as a voice actor remains tied to her limited but distinct film and game appearances. Beyond these projects, there is no significant or widely documented record of a substantial voice acting career, with her primary focus consistently remaining on her music performances and stage musicals.