Mari Yamada is a Japanese voice actress and narrator born on July 27, 1982, in Aomori Prefecture, Japan. Her career in the entertainment industry began in the early 2000s. Yamada has been associated with several talent agencies over the years, including Tori Tori Office, The Universe, and Atomic Monkey; as of April 2025, she is working with the agency Arbois under an agent contract.

Yamada is recognized for a range of voice roles in anime series. She is known for her work in the Onegai My Melody franchise, where she voiced the characters Risu-kun and Chuumi across multiple series from 2005 to 2009. She also portrayed Mika Masuko in the Yes! Precure 5 series and its sequel, Yes! Precure 5 GoGo!. Another notable role is Muhi in the anime series Punch Line. Her other television anime credits include roles in Jewelpet Tinkle, Strawberry Panic, and Cat Ramen.

Beyond television animation, Yamada has contributed voice work to video games. Her game credits include Airi Kodama in 11eyes CrossOver, Menkichi in Chou Aniki: Seinaru Protein Densetsu, and characters in Twinkle Star Sprites and ToHeart2 Dungeon Travelers. In addition to character acting, she has worked as a narrator for television programs such as Weekly AKB and Health Capsule! Genki no Jikan.