Marjolaine Poulain is a French actress, born in 1966, who is primarily known for her extensive work in voice acting, particularly in the dubbing of Japanese anime series and films for the French market. Her career in the entertainment industry began with a role in the live-action film Les Saisons du Plaisir, directed by Jean-Pierre Mocky, before she transitioned to focus on voice-over work.

Poulain's voice can be heard in a wide array of anime titles spanning from the 1980s through the 2000s. In the early 1990s, she voiced multiple roles in the OVA series Super Dimensional Fortress Macross II: Lovers Again. She is also recognized for her work in other classic OVAs from this period, taking on the role of Leona Ozaki in New Dominion Tank Police, Eira in Ellcia, and Nagisa Kai in Iczelion. Her filmography from this era also includes the films Baoh the Visitor and Roujin Z.

Throughout the 1990s and 2000s, Poulain continued to be a prominent figure in French anime dubs, providing voices for a diverse range of characters. She voiced Asuka Langley Sohryu in the landmark series Neon Genesis Evangelion and its subsequent films, such as Evangelion: 2.0 You Can (Not) Advance. Her other notable roles from this period include Henrietta in Gunslinger Girl, Tchii and Freya in Chobits, Kaede and Sakura in Blue Seed, Hime Utsumiya in Brain Powerd, and Hiro and Ritsu Sôma in Fruits Basket. She also voiced supporting roles in Trigun, Golden Boy, and Cowboy Bebop, among many others. Her work extended to feature films as well, such as providing the French voice for the character Djuba in the animated film Les Enfants de la Pluie and Akima in the science-fiction film Titan A.E..