This is a list of surnames in which the usage is Japanese; and the first letter is Y; and the gender is unisex; and the length is 6.
Yamada 山田, やまだ JapaneseFrom Japanese
山 (yama) meaning "mountain" and
田 (ta) meaning "field, rice paddy".
Yasuda 安田, 保田, やすだ JapaneseFrom Japanese
安 (yasu) meaning "peace, quiet" or
保 (yasu) meaning "protect, maintain" and
田 (ta) meaning "field, rice paddy".
Yokota 横田, よこた JapaneseFrom Japanese
横 (yoko) meaning "beside, next to" and
田 (ta) meaning "field, rice paddy".