Debt to GDP Ratio by Country 2018

Japan, with its population of 127,185,332, has the highest national debt in the world at 235.96% of its GDP (although, notably, Japan is also one of the world's largest economies). This is followed by Greece, which is still recovering from the effects of its economic crisis and subsequent bailout, at 191.27%. Venezuela, which is currently undergoing serious economic difficulties, is also in the top five countries with the highest national debt, with a debt to GDP ratio of 161.99%. Several African countries also have high national debts, including Sudan (176.49%), Eritrea (129.43%) and Gambia (111.45%).

Of the world's major economic powers, the United States has the highest national debt at 108.02% of its GDP. China, the world's second-largest economy and home to the world's largest population (1,415,045,928), has a national debt ratio of just 51.21% of its GDP. Germany, as Europe's largest economy, also has a relatively low national debt ratio at 59.81%. Hong Kong, a major global financial center, has the lowest national debt in the world, at just 0.05% of its GDP. This is followed by the tiny Kingdom of Brunei with a population of just 434,076 and a national debt of 2.49% of its GDP

IMF data from the April 2018 IMF World Economic Outlook database.

Name National Debt to GDP Ratio Population
Japan235.96%127,185,332
Greece191.27%11,142,161
Sudan176.49%
Venezuela161.99%32,381,221
Lebanon157.26%6,093,509
Italy129.75%59,290,969
Eritrea129.43%5,187,948
Barbados128.66%286,388
Yemen128.23%28,915,284
Cape Verde124.72%553,335
Portugal121.24%10,291,196
Gambia111.45%2,163,765
Republic of the Congo110.38%5,399,895
Singapore110.24%5,791,901
Mozambique110.14%30,528,673
United States108.02%326,766,748
Belgium101.00%11,498,519
Bhutan100.39%817,054
Jamaica98.28%2,898,677
Belize97.51%382,444
Cyprus96.97%1,189,085
Spain96.71%46,397,452
France96.35%65,233,271
Bahrain94.86%1,566,993
Dominica93.58%74,308
Jordan93.52%9,903,802
Egypt91.19%99,375,741
Antigua and Barbuda88.21%103,050
Brazil87.33%210,867,954
Canada86.56%36,953,765
United Kingdom86.33%66,573,504
Saint Vincent and the Grenadines81.39%110,200
Ukraine78.35%44,009,214
Sri Lanka77.34%20,950,041
Sao Tome and Principe76.93%208,818
Togo75.63%7,990,926
Croatia75.47%4,164,783
Austria75.35%8,751,820
Zimbabwe75.17%16,913,261
Tunisia73.10%11,659,174
Saint Lucia73.10%179,667
Angola72.97%30,774,205
Mauritania72.41%4,540,068
Slovenia72.10%2,081,260
Albania71.34%2,934,363
Maldives71.05%444,259
Montenegro69.72%629,219
Ghana69.10%29,463,643
India68.91%1,354,051,854
Suriname68.46%568,301
Hungary67.43%9,688,847
Pakistan67.18%200,813,818
Ireland67.12%4,803,748
Uruguay66.25%3,469,551
Zambia65.52%17,609,178
Laos65.51%6,961,210
Burundi65.11%11,216,450
Morocco64.06%36,191,805
Grenada64.03%108,339
Sierra Leone63.70%7,719,729
Nauru62.44%11,312
Israel61.56%8,452,841
Puerto Rico60.98%3,659,007
Senegal60.63%16,294,270
Finland60.53%5,542,517
Saint Kitts and Nevis60.32%55,850
Mauritius59.90%1,268,315
Germany59.81%82,293,457
Gabon59.28%2,067,561
El Salvador58.87%6,411,558
Serbia58.52%8,762,027
Seychelles58.50%95,235
Vietnam58.41%96,491,146
Ethiopia58.32%107,534,882
Kenya58.15%50,950,879
Malawi57.75%19,164,728
Bahamas57.50%399,285
San Marino55.54%33,557
Qatar55.35%2,694,849
Benin55.15%11,485,674
Kyrgyzstan55.09%6,132,932
Azerbaijan54.91%9,923,914
South Africa54.88%57,398,421
Armenia54.80%2,934,152
Iraq54.69%39,339,753
Argentina54.10%44,688,864
Guyana53.91%782,225
Iran53.86%82,011,735
Malaysia53.62%32,042,458
Mexico53.52%130,759,074
Netherlands53.51%17,084,459
Costa Rica52.76%4,953,199
Namibia52.43%2,587,801
Bolivia51.44%11,215,674
Vanuatu51.30%282,117
China51.21%1,415,045,928
South Sudan51.04%12,919,053
Poland50.81%38,104,832
Tajikistan50.15%9,107,211
Belarus49.46%9,452,113
Colombia49.27%49,464,683
Slovakia49.00%5,449,816
Central African Republic48.62%4,737,423
Malta48.61%432,089
Chad48.07%15,353,184
Ivory Coast48.00%24,905,843
Ecuador47.96%16,863,425
Fiji47.28%912,241
Oman46.77%4,829,946
Niger46.17%22,311,375
Samoa45.83%197,695
Equatorial Guinea45.56%1,313,894
Georgia44.22%3,907,131
Honduras43.84%9,417,167
Guinea43.66%13,052,608
Tuvalu43.20%11,287
Switzerland41.91%8,544,034
Trinidad and Tobago41.75%1,372,598
Australia41.70%24,772,247
Thailand41.62%69,183,173
Uganda41.45%44,270,563
Rwanda41.34%12,501,156
Macedonia41.20%2,085,051
Burkina Faso40.99%19,751,651
Guinea-Bissau40.07%1,907,268
Moldova39.76%4,041,065
Lesotho39.53%2,263,010
Tanzania39.34%59,091,392
Bosnia and Herzegovina39.30%3,503,554
South Korea38.87%51,164,435
Liberia38.67%4,853,516
Iceland38.41%337,780
Sweden38.03%9,982,709
Romania37.85%19,580,634
Panama37.68%4,162,618
Philippines37.32%106,512,074
Madagascar37.22%26,262,810
Dominican Republic36.87%10,882,996
Norway36.66%5,353,363
Swaziland36.23%1,391,385
Mali35.90%19,107,706
Denmark35.88%5,754,356
Cambodia35.78%16,245,729
Myanmar35.59%53,855,735
Cameroon34.26%24,678,234
Lithuania34.16%2,876,475
Nicaragua34.08%6,284,757
Taiwan33.56%23,694,089
Algeria33.34%42,008,054
Haiti33.17%11,112,945
Czech Republic32.91%10,625,250
Latvia32.90%1,929,938
Bangladesh32.70%166,368,149
Turkmenistan31.16%5,851,466
Papua New Guinea30.54%8,418,346
Djibouti30.44%971,408
Kiribati29.97%118,414
Indonesia29.63%266,794,980
Comoros28.36%832,347
Turkey27.79%81,916,871
Nepal27.41%29,624,035
Peru26.95%32,551,815
Nigeria26.75%195,875,237
Kuwait26.72%4,197,128
Paraguay26.46%6,896,908
Marshall Islands25.29%53,167
Guatemala24.45%17,245,346
New Zealand24.01%4,749,598
Chile23.80%18,197,209
Bulgaria23.59%7,036,848
Luxembourg22.94%590,321
Micronesia22.43%106,227
Kazakhstan21.65%18,403,860
Uzbekistan20.09%32,364,996
Saudi Arabia19.98%33,554,343
United Arab Emirates19.04%9,541,615
Russia18.67%143,964,709
Botswana14.89%2,333,201
Solomon Islands14.55%623,281
DR Congo14.47%84,004,989
Estonia8.47%1,306,788
Afghanistan6.76%36,373,176
Brunei2.49%434,076
Hong Kong0.05%7,428,887