Megumi Nasu is a Japanese voice actress born on July 27, 1978. Originally from Fukuoka Prefecture, she was raised in Aichi Prefecture after moving there during her sixth year of elementary school. Her path to becoming a voice actor began after high school when she moved to Tokyo. She gained her start in the industry by winning the grand prize in a talent search for the radio program Heinosuke Suzuki no All Night Nippon, which served as her debut opportunity.

Nasu's career spans numerous anime television series, original video animations, and video games since her debut in 1998. One of her earliest roles was as Pink, a member of the titular hero team in the 1998 children's anime series Takoyaki Mant-Man. In 2001, she voiced the character Bakunouchi Karin in the anime Fighting Foodons. During the same period, she took on the role of Hitomi Yuki in the series Samurai Girl Real Bout High School.

Nasu is also known for her work in original video animations and game adaptations. She voiced the character Rin Ichikawa in the 2004 animated short Skelter+Heaven. In the same year, she also played a role in the series Daiakuji - The Xena Buster as Youko Aoba. Her work in the Memories Off franchise includes voicing the character Yue Imasaka, a role associated with the visual novel series. She also voiced the character Kimiko Dewa in the OVA adaptation of Ichigeki Sacchu!! HoiHoi-san. Another notable role from this period includes Tomoko Saitou in the anime special Futatsu no Kurumi.

In addition to these specific titles, Nasu's broader career includes a wide variety of other roles. She is recognized for her performances as柏木沙絵 (Sae Kashiwagi) in Peach Girl,柏木舞 (Mai Kashiwagi) in Darker Than Black, and户高ユリア (Yuria Todaka) in Hell Girl. She has also had a long-running association with the Gundam franchise, voicing the character Noel Anderson in multiple video games. Her voice work extends to the popular long-running series Crayon Shin-chan, where she has appeared in various episodes in different roles. Nasu demonstrated her vocal range in the comedy series Gag Manga Biyori, where she voiced numerous characters in a single episode.

Over the course of her career, Nasu has been affiliated with several talent management agencies, including Production Baobab and Bell Production. As of June 2022, she is represented by Kekke Corporation.