Ayumi Nagao (長尾歩, Nagao Ayumi, January 11, 1975) is a Japanese actress and seiyū (voice actress) from Tokyo who is affiliated with Mausu Promotion. She has been a member of the AUN theater company (Gekidan AUN) since 2002. She was formerly affiliated with Ken Production until 2012. She has been affiliated with Mouse Promotion since 2015.

She has appeared in several plays and musicals as a member of the theater company AUN. Her voice acting career spans a wide range of areas including anime, games, dubbing, narration, and voiceover. Her hobbies and special skills include traveling alone, visiting shrines, visiting hot springs, photography and vocal music.