Determining the country with the most ports globally depends on whether you measure by total commercial maritime facilities, active container throughput volumes, or extensive coastline density. In terms of sheer container traffic volume, maritime scale, and massive port infrastructure handling global trade, China leads the world decisively, housing many of the busiest container mega-ports on earth, such as Shanghai, Ningbo-Zhoushan, and Shenzhen. Nations with extensive, highly indented coastlines—such as the United States, Japan, and the United Kingdom—also possess hundreds of major and minor commercial, industrial, and recreational harbors.