Quick Answer: Yamamoto (山本) Japanese Surname: 山本 Common Reading (Hiragana): やまもと Common Reading (Katakana): ヤマモト Romaji: Yamamoto Pronunciation Note: There are no long vowels in the standard reading of Yamamoto, so no macron or doubled vowel is typically used in romaji. What Does the Japanese Surname Yamamoto (山本) Mean? The Japanese surname Yamamoto (山本) is composed of two kanji characters: 山 (yama) and 本 (moto). The first kanji, 山 (yama), means "mountain." The second kanji, 本 (moto), can mean "base," "root," "origin," or "source." When combined, Yamamoto can be interpreted as "base of the mountain" or "foot of the mountain." ...