Narumi Sato is a Japanese voice actress affiliated with the talent agency 81 Produce. She was born on May 23 in Miyagi Prefecture. Her special skills include singing, and she holds the rank of shodan in kendo as well as the third grade in abacus.

Sato has been active as a voice actress since the early 2000s. One of her most prominent and long-running roles is as the character Denbo in the long-standing television anime series Ojarumaru. She began voicing Denbo, the second actor to do so, in 2005 and has continued in the role for many years, also voicing related characters like Denko and Ko-Denbo. Another significant and enduring role is her performance as Usami-chan in the Gag Manga Biyori series, a role she has played across all five installments of the anime adaptation, including the 2025 series Gag Manga Biyori GO. Her other anime credits include the lead role of Mameo in Kupu!! Mamegoma!, as well as roles in series such as Regen: The Legendary Dragon King, Sketch Dance, and The Melancholy of Haruhi-chan Suzumiya. In addition to her work in anime, Sato has also been involved in dubbing foreign productions for Japanese release.