Luigi Rosa, also known professionally as Gigi Rosa, is an Italian voice actor, dialogue writer, and dubbing director born in Turin on January 24, 1966. He is primarily active in the dubbing industry in Milan, though he has also occasionally worked in Rome, notably at Royfilm where he voiced characters under the direction of Leslie La Penna.

Rosa is widely recognized for his extensive work in anime, having lent his voice to several iconic characters. He is the original Italian voice of Monkey D. Luffy in the popular series One Piece, a role he performed for the first 255 episodes, starting in 2001, before being succeeded by Renato Novara. He later returned to the character for the home video release of the film One Piece Stampede, a special feature for fans. His other prominent anime roles include Gaara in Naruto and Naruto: Shippuden, and Cygnus Hyoga, known as Cristal the Swan, in the various iterations of the Saint Seiya franchise, including the original series, the Hades chapters, and several films. In the Ghost in the Shell: Stand Alone Complex series, he voices the character Paz, a member of the Tachikoma maintenance crew and a supporting operative in Section 9. His repertoire also includes Nobunaga Kiyota in Slam Dunk, Tatsuya Uesugi in Touch, Roto in Yu Yu Hakusho, and Pandora's Actor in Overlord, among many others.

Beyond anime, Rosa has voiced a vast array of characters in Western animation and live-action content. Notable roles include Edd (Double D) in Ed, Edd n Eddy from its second season onward, Beavis in the early seasons of Beavis and Butt-Head, and Abraham Lincoln in Clone High. He is also the Italian voice of Horace Horsecollar for Disney productions since 1999. In the realm of video games, his work is extensive, including Ron Weasley in several Harry Potter game adaptations, 343 Guilty Spark in Halo 2 and Halo 3, Zlatko Andronikov in Detroit: Become Human, and numerous characters in the Assassin's Creed franchise.

In addition to voice acting, Rosa frequently works as a dialogue adapter and dubbing director. He served as the dubbing director for the Italian edition of the film One Piece Stampede, a role for which he also handled the dialogue adaptation. His long-standing connection to the One Piece series and his return to voice Luffy for a special edition highlight a significant recurring collaboration within his career.