Oka (written: 岡 or 丘) is a Japanese surname. Notable people with the surname include: Asajiro Oka (丘 浅次郎, 1866–1944), Japanese zoologist, anatomist and...

the time Asajirō became successor to this business, changing the recipe. A detailed chronology was stitched together by local historian Oka Chōhei based...

species was first described in 1906 by the Japanese marine biologist Asajiro Oka, who gave it the name Cynthia ritteri. It was later transferred to the...