This is a list of surnames in which the usage is Japanese; and the description contains the keyword hill.
Aoyama 青山, あおやま JapaneseFrom Japanese
青 (ao) meaning "green, blue" and
山 (yama) meaning "mountain, hill".
Okabe 岡部, おかべ JapaneseFrom Japanese
岡 (oka) meaning "hill, ridge" and
部 (be) meaning "part, section".
Okamoto 岡本, おかもと JapaneseFrom Japanese
岡 (oka) meaning "hill, ridge" and
本 (moto) meaning "base, root, origin".
Tomioka 富岡, とみおか JapaneseFrom Japanese
富 (tomi) meaning "wealth, abundance" and
岡 (oka) meaning "hill, ridge".