Marco Altini is an Italian voice actor and dialogue adapter born in Bari on March 2, 1988. His artistic training began at the Accademia Unika in Bari, where he studied acting, diction, and theatrical research. He furthered his education by taking a preparatory acting course at the Paolo Grassi Civic School of Drama in Milan and later moved to Rome to specialize in dubbing, studying under notable figures such as Christian Iansante, Roberto Pedicini, and Silvia Pepitoni. He also studied dialogue adaptation with Gianluca Crisafi and Davide Lepore. In addition to his work in dubbing, he has experience as an actor and singer in various theaters in Puglia, including the Petruzzelli and Abeliano theaters.

Altini has provided the Italian voice for a range of characters in anime series and animated films. Among his most recognized roles is Nobimaru in the series Kemono Jihen. He is also known for his work in the 2011 version of Hunter x Hunter, where he voiced the characters Shalnark and List. His other anime credits include Kanetsugu Gasou in Masamune-kun's Revenge R and Eugene in My Unique Skill Makes Me OP even at Level 1. In the animated film Fortune Favors Lady Nikuko, he lent his voice to multiple characters, including Cicala, Manaka, and Matsumoto.

Beyond his on-screen roles, Marco Altini is also active in the adaptation of scripts for dubbing. He has worked as an adapter on projects such as the Italian versions of Hunter x Hunter (TV 2011) and Mobile Suit Gundam 0080: War in the Pocket. In addition to his performance and adaptation work, he shares his expertise in diction and vocal technique as an instructor. He has been a diction teacher at the Scuola di Doppiaggio in Rome and has taught diction to young students at the A&F Dubbing course, a program created by voice actors Perla Liberatori and Alessandro Parise.