Karin Medeiros is a Brazilian voice actor known for her work in dubbing anime, live-action series, and films for the Brazilian Portuguese market. Her performance as Hina Amano in the anime film Weathering With You is a prominent role in her career. The dubbing for this film was produced by the Tecniart studio in Rio de Janeiro under the direction of Marcus Júnior.

Beyond this anime feature, Medeiros has voiced characters in other animation projects. Notably, she provided the voice for Dot/Nidotina in the anime series Pokemon Horizons in 2023. Her portfolio also includes dubbing live-action productions. She has lent her voice to the character Rhaenyra Targaryen in the series House of the Dragon since 2022 and to Lily Bloom in the film It Ends With Us. Additional credits include voice work for episodes of the series Supernatural and Peaky Blinders.

Medeiros was born circa 2002, making her 23 years old as of late 2025. In the dubbing industry, she has worked alongside other voice actors such as Bia Menezes and Natália Medeiros, with whom she shared credits on Weathering With You. A notable achievement in her career includes being cast as the voice of Supergirl for the post-credits scene of the 2025 film Superman.