Iñaki Crespo is a Spanish dubbing actor, recognized for his voice work in the European Spanish adaptations of various animated series and films. His body of work is primarily in the field of dubbing for Spanish audiences, where he has lent his voice to numerous characters across different media.

Crespo trained in dramatic art at the Escuela Superior de Arte Dramático de Málaga. His entry into the world of dubbing was facilitated by a boom in private television channels in Spain, which created a high demand for voice actors. After initial training, he quickly began working professionally. He is also known to teach dubbing classes.

Within the anime and animation sphere, Crespo is notably recognized for his role as the voice of Professor Cerezo, known as Professor Cerise in the original version, in the European Spanish dub of the Pokémon Journeys: The Series anime. This character is a Pokémon Professor who runs a laboratory in Vermilion City. His involvement with the Pokémon franchise also extends to the film Pokémon: Arceus and the Jewel of Life, where he voices the character Marcus in the European Spanish dub.

Beyond Pokémon, Crespo provided the voice for the character Takuma Miura in the European Spanish version of the anime series Sword Gai: The Animation Part II. His other anime credits include the role of Shouhei Harada in the special Touch: Cross Road - Kaze no Yukue and voicing the character Hyoga de Cisne (Cygnus Hyoga) in both the film Saint Seiya: Legend of Sanctuary and the series Knights of the Zodiac.

In addition to his work in animation, Crespo has an extensive career dubbing live-action content. He is known as one of the regular Spanish dub voices for actors such as Michael Fassbender and Idris Elba. His numerous credits in this field include Spanish dubs for popular television series like Juego de Tronos (Game of Thrones), The Walking Dead, House, Los Soprano (The Sopranos), and Doctor Who.