Japanese surnames starting with eight characters.

Eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight, eight.

Bagang, Bahe, Bahe, Bagang, Bajia, Baxuan, Baxiang, Bashan, Bazhang, Batiao, Baxiao, Bahai, Bazhou, Batuochuan, Bawangdi, Batianyu, Batianyuan, Batiandui, Batantian, Batantian, Batantian, Batantin and Batianwan.

From Yahoo Japan for your reference.