Bogo JANG (790 - 846?) was a Korean who established power across the sea in Silla (ancient Korean kingdom), Tang (Chinese Dynasty) and Japan during the TongilSilla (United Silla) period.
張保皐（ちょうほこう、790年頃-846年?）は統一新羅時期に新羅、唐、日本にまたがる海上勢力を築いた人物。