Takako Tanaka is a Japanese voice actress born on October 5, 1994, in Fukui Prefecture, Japan. She is affiliated with the talent agency Mausu Promotion. Tanaka began her path to becoming a voice actress by enrolling in the voice actor course at the Osaka Animation School, from which she graduated in 2015. Following her graduation, she joined the training institute affiliated with Mausu Promotion and officially became a member of the agency on April 1, 2017.

Tanaka made her debut as a voice actress in 2017, taking on minor roles in several anime television series, including appearances in Akiba's Trip: The Animation and Aikatsu Stars!. Her first major breakthrough came in 2018 when she was cast in her first leading role as the protagonist Hina in the comedy anime series Hinamatsuri (known as The Black's超能力 daughter in some regions). This performance brought her significant attention and established her as a rising talent in the industry.

Following her success in Hinamatsuri, Tanaka built a substantial portfolio of roles across various anime series. In 2019, she voiced the character Futago Nosaki in Hitori Bocchi no Marumaru Seikatsu. The year 2020 was particularly prolific for her, featuring in multiple series. She played Shimamura's sister in Adachi and Shimamura, Roana in Interspecies Reviewers, Rua Nakamachi in Dropout Idol Fruit Tart, and Orvelia (Ophelia) in KING'S RAID: Successors of the Will. She also had a role in the long-running franchise Healin' Good ♡ Pretty Cure. In 2021, she voiced Miki Tamase in the anime adaptation of Muv-Luv Alternative and took on the role of EL-Cee in Deep Insanity: The Lost Child. Her work continues into the mid-2020s with roles in series such as The Apothecary Diaries and the 2025 anime There's No Freaking Way I'll Be Your Lover! Unless....

Beyond her work in anime, Tanaka has an extensive presence in the video game industry. One of her most notable game roles is Annette Fantine Dominic in the critically acclaimed title Fire Emblem: Three Houses and its sequel, Fire Emblem Warriors: Three Hopes. She has also lent her voice to characters in various other games, including Blue Reflection, the Muv-Luv franchise, and Granblue Fantasy.

Tanaka is known for her versatile vocal range and energetic performance style, which allows her to portray a wide variety of characters, from comedic roles to more dramatic parts. Outside of acting, she possesses several creative talents, including the ability to improvise song lyrics and music, play the piano, and perform one-person musicals. She is also noted for her ability to mimic the sounds of jungle animals. Her natural dialect is the Fukui accent, and she has a playful nickname, TT, given to her by fans and colleagues.