ATLAS · SEAPORTS · JAPAN
Seaports in Japan
Japan has 163 portsin the World Port Index — 11 large deep-water ports, 26 medium and 126 smaller harbours. They sit on North Pacific Ocean, Sea of Japan; North Pacific Ocean, East China Sea; North Pacific Ocean. Below: how they split by size, and the biggest harbours. From the NGA World Port Index, snapshot 2026-06-22.
PORTS163
LARGE · MEDIUM11 · 26
ONNorth Pacific Ocean
By harbour size
Large11 · 7%
Medium26 · 16%
Small54 · 33%
Very small72 · 44%
Biggest ports in Japan
The largest harbours in the snapshot, with their water body and harbour type.
largeYokohama KoNorth Pacific Ocean · Coastal (Breakwater) · JP YOKmax 400 m
largeWakayama-Shimotsu KoSea of Japan; North Pacific Ocean · Coastal (Breakwater) · JP WAKmax 320 m
largeKawasaki KoNorth Pacific Ocean · Coastal (Breakwater) · JP KWSmax 315 m
largeKobeSea of Japan; North Pacific Ocean · Open Roadstead · JP UKB
largeMikawaNorth Pacific Ocean · Coastal (Breakwater) · JP MKW
largeNagasakiEast China Sea; North Pacific Ocean · Coastal (Natural) · JP NGS
largeNagoya KoSea of Japan; North Pacific Ocean · Coastal (Breakwater) · JP NGO
largeOnomichi-ItozakiSea of Japan; North Pacific Ocean · Coastal (Natural) · JP ONX
largeOsakaSea of Japan; North Pacific Ocean · Coastal (Breakwater) · JP OSA
largeTokyo KoNorth Pacific Ocean · Coastal (Natural) · JP TYO
largeWakamatsu KoKorea Strait; North Pacific Ocean · Coastal (Natural) · JP WAM
mediumHakodate KoNorth Pacific Ocean · Coastal (Breakwater) · JP HKDmax 347 m
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