Final answer:
The filmmaker renowned for Spirited Away, My Neighbor Totoro, and Howl's Moving Castle is Hayao Miyazaki, a key figure in animation and co-founder of Studio Ghibli.
Step-by-step explanation:
The filmmaker famous for movies such as Spirited Away, My Neighbor Totoro, and Howl's Moving Castle is Hayao Miyazaki. He is a co-founder of Studio Ghibli, a renowned Japanese animation film studio. Miyazaki's films are celebrated for their rich storytelling, distinct animation style, and exploration of complex themes such as nature, technology, and humanity. His work has not only gained critical acclaim globally but also achieved significant box office success, making him one of the most influential animators in the history of the medium.