List of countries and territories by maritime boundaries


This is a list of countries and territories by maritime boundaries with other countries and territories. The list encompasses adjacent maritime nations and territories with a special focus on the boundaries or borders which distinguish them.
For purposes of this list, "maritime boundary" includes boundaries that are recognized by the United Nations Convention on the Law of the Sea, which includes boundaries of territorial waters, contiguous zones, and exclusive economic zones. However, it does not include lake or river boundaries. "Potential" maritime boundaries are included; that is, the lack of a treaty or other agreement defining the exact location of the maritime boundary does not exclude the boundary from the list.
In numbering maritime boundaries, three separate figures are included for each country and territory. The first number is the total number of distinct maritime boundaries that the country or territory shares with other countries and territories. If the country shares two or more maritime boundaries with the same country or territory and the boundaries are unconnected, the boundaries are counted separately. The second number is the total number of distinct countries or territories that the country or territory borders. In this instance, if the country or territory shares two or more maritime boundaries with the same country or territory and the boundaries are unconnected, the boundaries are only counted once. The final number is the total number of unique sovereign states that the country or territory shares a maritime boundary with.
Footnotes are provided to provide clarity regarding the status of certain countries and territories.
States with a dagger are landlocked states.
Country or territory
'		No. of unique
maritime
boundaries		No. of unique
maritime
neighbours		No. of unique
and sovereign
maritime
neighbours		Maritime boundary neighbours
'
= No. of unique maritime boundaries with that country or territory
= boundary settled partially or wholly by arbitration or ICJ judgment
= boundary settled partially or wholly by treaty
444


Adélie Land 211 Australian Antarctic Territory
' 000
Akrotiri and Dhekelia 1033

'333

'444


555'
'

'
Amsterdam Island and Île Saint-Paul 000
' 000
'433

444

'
'
333'
'
Peter I Island
'553'
'
'

'
'333
'
222'
'
' 000
000
222
111
'
→includes:
→
→
→
→
→ Macquarie Island
→		1176

Kerguelen Islands
'


866

'


Australian Antarctic Territory 433 Adélie Land
Queen Maud Land
Ross Dependency
' 000
'333

000
'444

'
'333

Baker Island and Howland Island 111
'222
'554'
'


Bassas da India, Europa Island, and Juan de Nova Island 222
' 000
'333

'333

'333

000
' 000
' 000
'111
' 000
000
'222'
333'
'
Queen Maud Land
111
221'
'
'211
'222
' 000
'333

' 000
'222
'222
'633'
'
'333

444


' 000
' 000
'222
'975'



'


111
000
000
'121010'








'775 Glorioso Islands

'

'

'211
'222
553'
'

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'744


'222
'444


Crozet Islands 000
'887
'




'
222
'1477 Akrotiri and Dhekelia





' 000
'655



Denmark, Kingdom of
→includes:
→
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→		1397


'


'

'333

'332'
'
'876

'
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'
'422
'333

'999







'333

'644


'444


'444


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Europa Island, Bassas da India, and Juan de Nova Island 222
111
333

'665'




'
'333

'975
'

'



→includes:
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→		533930'







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Heard Island and McDonald Islands

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222
333'

'
666'




'433

'322
'333

'655



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322
Glorioso Islands 333

'666




443

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'
'222
555


'
111
'544


221
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'222
'222
'333

'877




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111 Kerguelen Islands
'988
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210
Howland Island and Baker Island 111
' 000
'332'
'
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Île Saint-Paul and Amsterdam Island 000
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'211
000
'555



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221
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Juan de Nova Island, Bassas da India, and Europa Island 222
'222
'222
Kerguelen Islands 111'
and Palmyra Atoll 111
'996'
'
Howland Island and Baker Island
'
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'
'544


'433

000
'333

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'444 Akrotiri and Dhekelia


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'222
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210
Macquarie Island 111
'664
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222
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'1066




'333'

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'222
'444


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444


'333

'
'332'

Tromelin Island
222
'755



'444'


000
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'211
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'333

444
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'854
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'665
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'

'222
'222
333

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'1096'




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665

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'453

Macquarie Island
'
New Zealand, Realm of
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→		11107'


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Macquarie Island
'


'
'644


' 000
'555



332'
'
222'
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433

111
'554
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'744


'333

'333

'222
Palmyra Atoll and Kingman Reef 111
'422
'755


'
' 000
'222
Peter I Island111'
'666





111'
'444


'522
333'

'644


Queen Maud Land 222 Australian Antarctic Territory
'
444


'333

Ross Dependency 111 Australian Antarctic Territory
'141414












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443


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'555
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332
'
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111
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'544


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Glorioso Islands


'222
'222
122'
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'222
'444
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'333

333

'222
000
000
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'1487

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'222
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'222'
222'
'1099







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'333

'333

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'766




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554'
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Tromelin Island 222
'555



'333

'999







'333

333

'333

'
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'444


'744


'987

'





→including:
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