Janet Borrus is an American voice actor, actress, and screenwriter based in Los Angeles, known for her work in animation, video games, and commercial narration. Her entry into voice acting began with a notable first gig playing a hysterical yenta opposite showbiz legend Carl Reiner. She later worked with Reiner again on an Audie-winning recording for NPR that also featured Ed Asner. Her career spans multiple facets of performance, including on-camera guest roles on series such as Pretty Little Liars and a film appearance with Laurence Fishburne in Akeelah and the Bee. On stage, she has performed Off-Broadway and toured her solo show The Ramona Roses, which Daily Variety reviewed as exuberant and hilarious. In the voiceover field, her commercial clients have included national brands like Sprint, Pier 1, and Magnolia Bakery. She has also lent her voice to corporate narrations, e-learning modules, narrative podcasts, and audiobooks.

Borrus is recognized for providing the English voice of Utayama in the 2024 Netflix feature Mononoke The Movie: Phantom in the Rain. In this film, she voices the character who serves as the Manager of the Imperial brothel. The Japanese voice actor for the same character is Mami Koyama. This role marks a credited anime voice performance in her filmography, with the English dub produced for the platform.

Her professional background includes work as a high school theatre teacher and a screenwriter, having co-written the feature film Bellyfruit which starred Michael Pena. She is a graduate of Oberlin College and the Drama Studio in London. Her voice has been described by clients as carrying natural warmth and authority, with a noted ability to sound convincing as an expert while also creating memorable characters ranging from supermoms to supervillains.