Hilary Haag is an American voice actress known for her extensive work in English dubs of anime series, primarily with ADV Films and Sentai Filmworks. Born on December 3, 1973, she is a graduate of Texas A&M University, where she studied English Rhetoric. Her career in voice acting began in the mid-1990s and has continued for nearly three decades, during which she has become recognized for her distinctive, natural child-like voice, a quality that often leads to her being cast in roles of younger female characters.

Haag's filmography is extensive and includes a wide array of prominent roles. Some of her earlier and most notable performances include Nene Romanova in Bubblegum Crisis Tokyo 2040, Teletha Testarossa in the Full Metal Panic! series, Rosette Christopher in Chrono Crusade, and Chloe in Noir. She has also voiced Fuko Ibuki in Clannad, Rebecca "Becky" Miyamoto in Pani Poni Dash!, and Yui in Angel Beats.

In addition to these foundational roles, Haag has voiced many characters in more recent and popular series. She plays the role of Momo Kashiwabara in Domestic Girlfriend. She is also the voice of Liliruca Arde, a recurring role she has performed across multiple installments of the Is It Wrong to Try to Pick Up Girls in a Dungeon? franchise, including its third and fourth seasons and the film Arrow of the Orion. Her other prominent modern roles include the titular character Ueno in How Clumsy you are, Miss Ueno, Saku "Loli" Momoi in Wasteful Days of High School Girls, Ryoko Yoshida in The Demon Girl Next Door, and Komachi Hikigaya in My Teen Romantic Comedy SNAFU and its sequel, My Teen Romantic Comedy SNAFU Climax. She also voices Chiyu Tamade, also known as CHU2, in the BanG Dream! series.

Beyond these, Haag's extensive body of work encompasses a diverse range of other characters across many genres. These include Shiori Shiomiya in The World God Only Knows: Goddesses Arc, Erimi Mushibami in Kakegurui, Lingyin Huang in the Infinite Stratos series, Bahamut in Leviathan: The Last Defense, Hinaichigo in Rozen Maiden: Zurückspulen, and Rune Balot in the Mardock Scramble film trilogy. Her filmography also features roles in acclaimed films such as Akari Shinohara in 5 Centimeters Per Second and Asuna Watase in Children Who Chase Lost Voices. Haag's career continues to be active, with recent credits including roles in series like The Dangers in My Heart, Insomniacs After School, and Loner Life in Another World.