Nanami Yamashita is a Japanese voice actress born on July 19, 1995, in Tokushima Prefecture, Japan. She is 160 cm tall and has blood type A. Yamashita is affiliated with the talent agency 81 Produce.

Her path to a voice acting career began in 2012 during her second year of high school when she decided to audition for the anime project Wake Up, Girls!. She successfully passed the avex × 81 Produce Wake Up, Girls! AUDITION and made her debut as a voice actress in 2014, playing the role of Nanami Hisami in the titular series. Her involvement with the series also made her a member of the voice actor unit Wake Up, Girls!.

Early in her career, Yamashita took on a variety of roles that helped establish her presence in the industry. In 2014, she was cast as Chifuyu Himeki in When Supernatural Battles Became Commonplace and as Master Liber in Trinity Seven. The following year, she voiced Hacka Doll #3 in Hacka Doll the Animation and began her long-running role as Yui Ōtsuki in The Idolmaster Cinderella Girls franchise.

Yamashita has built an extensive filmography across anime television series, films, and video games. Some of her other notable anime roles include Miku in Darling in the Franxx, Kiyo Terauchi in Demon Slayer: Kimetsu no Yaiba, Pepper Taiyō in the PriPara franchise, Tsugumi Yagi in High School Fleet, Sushie Ernea Ortlinde in In Another World with My Smartphone, Yoshimi Iwaki in Cinderella Nine, and Kurage Aoba in TenPuru. She also provided the voice for characters in multiple Sylvanian Families Mini Story series. In video games, her roles extend to Yulha in Goddess of Victory: Nikke and Sahli Lao in Granblue Fantasy.

Yamashita has a recurring association with the long-running anime franchise Mr. Osomatsu, where she voices the character Nyaa Hashimoto across multiple seasons and the film adaptation. Her involvement with The Idolmaster: Cinderella Girls is also a significant part of her career, with her role as Yui Ōtsuki spanning several anime seasons and mobile games.

In 2015, Yamashita was a recipient of the第九回声優アワード (9th Seiyu Awards) Special Award as part of the Wake Up, Girls! cast. She is known to enjoy singing and dancing, having participated in local karaoke contests in her hometown. Her other hobbies include conversation, drawing, and playing the flute, and she is skilled at making fried rice and apple pie.