Kōki Miyata (宮田 幸季, born on 9 October 1972 in Kanagawa Prefecture) is a Japanese voice actor who provides the voice of Skiff in the Japanese dub of Thomas & Friends: All Engines Go.
He is best known for voicing Susumu Tsukumo from "Wandaba Style", Aiichiro Nitori from "Free!", Hachi Shiō from "D-Frag!", and Phineas Flynn from "Phineas and Ferb". He also provides the voice of SpongeBob SquarePants in the animated television series of the same name, following the passing of Taiki Matsuno in 2024.