Sayuri Yamauchi, known professionally by her stage name Sayuri, was a Japanese voice actress born in Tokyo on May 28, 1956. She was affiliated with Kyu Production early in her career and was with Production Aigumi at the time of her death on March 6, 2012, at the age of 55.

Her career spanned several decades, during which she took on a wide variety of roles in anime, video games, and dubbing. One of her most recognized performances was as the complex and devoted Lady Une in the television series Mobile Suit Gundam Wing and its sequel, Mobile Suit Gundam Wing: Endless Waltz Special Edition. She also had a significant presence in the Brave series, providing voices for multiple characters in the GaoGaiGar franchise. Her roles in The King of Braves GaoGaiGar and its sequels included Ikumi Kaidô, Ai Amami, and Primarda, demonstrating her vocal range within a single series.

Beyond these prominent roles, Sayuri's filmography was extensive. She voiced "Twilight" Suzuka in Outlaw Star and Nanako Ohara, a long-running character in the popular series Crayon Shin-chan. Her work also included the role of Tiara in the OVA Shamanic Princess, Hana Ōyama in Torajima no Mî me, and Akane Todoroki in the 2011 film Kizuna Ichigeki. In video games, her later credits included the character Lorithia in Xenoblade Chronicles.

In addition to her anime work, Sayuri was active in dubbing foreign productions. She was notably the Japanese voice for both Itchy and Maude Flanders on the long-running animated series The Simpsons. She also contributed her voice to the world of anime music, performing theme songs for projects such as the OVA The King of Braves GaoGaiGar Final.