Alyson Leigh Rosenfeld is an American voice actress known for her extensive work in anime dubbing, particularly for her long-standing roles in the Pokémon and Yu-Gi-Oh! franchises. Born in New York City on March 21, 1987, she developed an interest in performance at a young age and is a graduate of New York University's Tisch School of the Arts.

Rosenfeld's career in voice acting began in 1999, but her breakthrough came in 2011 when she started voicing Nurse Joy in the Pokémon anime series. This role led to her becoming a central figure in the franchise's English dub, where she is perhaps best known for voicing the character Bonnie, the younger sister of Clemont, in Pokémon the Series: XY and XY&Z. She also voices the character Sophocles in Pokémon the Series: Sun & Moon and its sequels. Her Pokémon work extends to numerous films, including the ones mentioned such as Pokémon the Movie: Diancie and the Cocoon of Destruction, Pokémon the Movie: Hoopa and the Clash of Ages, and Pokémon the Movie: Volcanion and the Mechanical Marvel, where she reprised her role as Bonnie.

Concurrently with her Pokémon work, Rosenfeld has been a significant presence in the English adaptations of the Yu-Gi-Oh! anime series. Her roles include Rio Kastle in Yu-Gi-Oh! Zexal and Allie, Riley, Grace, and Gloria Tyler in Yu-Gi-Oh! Arc-V. Another major area of her career is within the Gundam franchise. She has voiced Fraw Bow in multiple projects, including Mobile Suit Gundam: The Origin and Mobile Suit Gundam: Cucuruz Doan's Island, as well as Lunamaria Hawke in Mobile Suit Gundam SEED Destiny and the 2024 film Mobile Suit Gundam SEED Freedom. Her performance as Lunamaria Hawke in Gundam Seed Freedom earned her a Society of Voice Arts and Sciences (SOVAS) Award for Outstanding Anime Character in 2024.

Beyond these flagship series, Rosenfeld's anime filmography includes the role of Aina Ardebit in the film Promare and its related short, Promare: Galo-hen. She also voiced Eru Kusaba in the series Maesetsu! Opening Act, Sakiko Seki in the film Okko's Inn, Hazuki Kato in Liz and the Blue Bird, and Kahori Harukawa in Psychic School Wars. Her voice work also extends to Western animation and international co-productions, where she has played leading roles such as Polly Pocket in Polly Pocket, the title character in Strawberry Shortcake, and Girl in the series Boy Girl Dog Cat Mouse Cheese.

In addition to animation, Rosenfeld is active in video games, providing voices for characters such as Octavia in Pathfinder: Kingmaker, Queen Galfrey in Pathfinder: Wrath of the Righteous, and the operator Pozëmka in Arknights. She has also maintained a career in theatre, starring in various New York City stage productions.

Rosenfeld is married to fellow voice actor James Weaver Clark, and the couple has a son. They have worked together on projects such as the film Okko's Inn, where they voiced a married couple.