Sergio Antonica is an Italian voice actor known for his work on the Italian-language dubs of numerous anime series from the 1970s and 1980s. His career is primarily defined by his roles in classic adventure and sports anime, contributing significantly to the Italian voice casts for many popular titles during the emergence of anime in Italy.

Antonica is recognized for several key voice roles. In the dystopian martial arts series Fist of the North Star, he provided the voice for the antagonist Souther, the powerful ruler of the Holy Cross Mausoleum, and also voiced the characters Raiga and Wein. In the mecha series Voltron: Defender of the Universe, specifically the Americanized Voltron version, he played the character Huck. For the sports drama Aim for the Ace!, he voiced Jin Munakata, the talented and complex tennis player who becomes a rival to the protagonist.

His other notable anime roles include Conte Zanzor in Voltes V, Bermel in The Alps Story: My Annette, and Yamaoka in Attacker You!. He also held multiple roles in Song of Baseball Enthusiasts, portraying characters such as Inamoto, Ken Hiura, Saburo, and Tatewaki. Further voice work includes characters in The White Whale of Mu, including Glautis, Gorgos, and Zargon, as well as roles in the 1987 redubbing of Lupin the 3rd and Ikkyū-san, where he voiced Okawara and served as a third narrator voice. His achievements reflect a consistent presence in Italian anime dubbing during the genre's formative years, contributing to a range of antagonist and supporting character roles across multiple productions.