Yokosuka Naval Air Technical Arsenal

The First Naval Air Technical Arsenal (第一海軍航空技術廠), located in Yokosuka, Japan, was responsible for the design of several aircraft used by the Japanese Imperial Navy during World War II. Actual manufacture of Yokosuka designs was handled by companies such as Aichi Kokuki.

In English-language references, such aircraft are usually designated "Yokosuka", while in Japanese the term "Kugisho" (空技廠, a contraction of "Koku Gijutsu-sho"), is used.