Rokurō Naya was a Japanese actor, voice actor, and narrator from Tokyo, active in the entertainment industry from the mid-1950s until his death in 2014. He was born on October 20, 1932, and was a lifelong resident of Tokyo. He was the younger brother of fellow prominent voice actor Gorō Naya. At the time of his passing on November 17, 2014, at the age of 82, he was affiliated with the talent agency Mausu Promotion.

Naya began his career in the mid-1950s as a member of a theatrical group before transitioning to voice acting. His voice acting debut is cited as occurring in 1969 with the series Yōkai Ningen Bem. Over a career spanning more than six decades, he became known for his versatility, taking on a wide range of roles in anime, tokusatsu, video games, and Japanese dubs of foreign films and television series.

In anime, Naya accumulated a vast number of credits. Among his earliest roles was Barry Hawk in the 1979 series Toshi Gordian. He was a long-standing cast member of Crayon Shin-chan, where he voiced the character Enchou (the school principal), a role he played from the early 1990s until 2014. He also provided voices for numerous other productions, including the role of Matsumoto in Umi Monogatari, Hideyoshi Hata in Psychic Detective Yakumo, and Kaya in Doki Doki Densetsu Mahōjin Guru Guru. His filmography includes Dr. David Livesey and the Ishitsukuri Prince in works from the Fairy Tale Special Selection, Orochi in Destiny of the Shrine Maiden, and the roles of Father and Bluebeard in Yonimo Osoroshii Grimm Dōwa. Later in his career, he played characters such as Christophe Blanc in Eureka Seven AO and Grumman in Fullmetal Alchemist: Brotherhood.

Beyond anime, Naya was a prolific voice in dubbing foreign content, providing the Japanese-language voices for numerous Hollywood actors and characters. He was the regular dub voice for actors like William H. Macy, Ed Harris, and Gary Oldman, notably dubbing Oldman's Commissioner Gordon in Christopher Nolan's The Dark Knight Trilogy. He was also well-known to Japanese audiences as the voice of Squidward Tentacles in the long-running series SpongeBob SquarePants, a role he performed from its inception until the eighth season. Other prominent dubbing roles included Professor X in X-Men: The Animated Series and Sir Topham Hatt in Thomas the Tank Engine & Friends.

Naya's work also extended significantly to video games and tokusatsu. He was the voice of Ghaleon in the Lunar series and Tenmyouji in Zero Escape: Virtue's Last Reward. In tokusatsu productions, he provided voices for characters such as the Wisdom Tree Moak in Seijuu Sentai Gingaman.

In recognition of his lengthy and distinguished career, Rokurō Naya was awarded the Merit Award at the 8th Annual Seiyū Awards in February 2014, which honors voice actors for their lifetime contributions to the industry across various genres.