Isabel Lago is a Spanish voice actor based in Madrid, active in dubbing for animation and live-action productions. She works primarily in Castilian Spanish and is also proficient in Valencian. Beyond dubbing, her professional skills include advertising voiceover, narration, and singing.

Lago is recognized in the anime community for her roles in several prominent series. She provides the Spanish voice for Manaka in the Netflix anime Aggretsuko, appearing in the series third and fourth seasons. She also voices Haruka Tenoh, also known as Sailor Uranus, in the Spanish dubs of the films Pretty Guardian Sailor Moon Eternal and Pretty Guardian Sailor Moon Cosmos.

Her other anime credits include the role of Milon in Edens Zero, Sophina Brivia in Mashle: Magic and Muscles, Elinalise Dragonroad in Mushoku Tensei: Jobless Reincarnation II, and the Priestess of Chaos in The Seven Deadly Sins: Dragon's Judgement. In a notable recurring collaboration, she is the habitual Spanish dubbing voice for the Japanese voice actor Junko Minagawa.

In addition to her anime work, Lago's dubbing career encompasses a wide range of characters in international productions. These include Dar-Benn in the Marvel Cinematic Universe film The Marvels, Naima in The Simpsons, and various roles in television series such as The Last of Us, You, and Deadloch.