Geographic entityArea (km2)Notes |- |Earth||510,065,284||Total surface area ( water coverage and land coverage). |- |Water||361,126,221||Total water coverage ( of Earth's surface). |- |Pacific Ocean and adjacent seas||165,500,000||Largest ocean, including adjacent Celebes Sea, Coral Sea, East China Sea, Philippine Sea, Sea of Japan, South China Sea, Sulu Sea, Tasman Sea, and Yellow Sea. |- |Pacific Ocean excluding adjacent seas||155,557,000||Largest ocean. |- |Land||148,939,063||Total land coverage ( of Earth's surface). |- | United Nations countries||147,000,000||All countries in the UN. |- | World Health Organization countries|| 134,697,385||All countries in the WHO. |- | World Trade Organization countries||117,870,000||All countries in the WTO. |- |Atlantic Ocean and adjacent seas||106,400,000||Second largest ocean, including adjacent Denmark Strait, Greenland Sea, Norwegian Sea, Barents Sea, Strait of Gibraltar and Mediterranean Sea, Black Sea, Caribbean Sea, Gulf of Mexico, Hudson Bay, Arctic Ocean, North Sea, Baltic Sea, and Celtic Sea. |- |Old World||84,980,532||The world known to its population before contact with the "New World" (the Americas). |- |Afro-Eurasia||84,211,532||Largest contiguous landmass. |- |Holarctic||77,000,000||Biogeographic realm that encompasses the majority of habitats found throughout the northern continents of the world. |- |Atlantic Ocean excluding adjacent seas||76,762,000||Second largest ocean. |- |Indian Ocean and adjacent seas||73,556,000||Third largest ocean, including Andaman Sea, Arabian Sea, Bay of Bengal, Great Australian Bight, Gulf of Aden, Gulf of Oman, Laccadive Sea, Mozambique Channel, Persian Gulf, Red Sea, and Strait of Malacca. |- |Indian Ocean excluding adjacent seas||68,556,000||Third largest ocean. |- |Palearctic||54,100,000||Largest of the eight biogeographic realms of the Earth. |- |Eurasia||53,990,000||Largest broadly connected contiguous landmass, comprising the traditional continents of Europe and Asia; sometimes considered a single continent, it covers of Earth's surface ( of the land area). |- | Asia Cooperation Dialogue||46,872,864||Supranational political entity. |- |Asia||44,579,000||Largest continent. |- |Americas||42,549,000||Large contiguous landmass viewed in some parts of the world as single continent. |- |||40,275,678||International organization contains most countries in the Americas. |- |Moon||37,930,000||Satellite in orbit around the Earth, excluded by treaty from national claims of ownership. |- | Permanent members of the United Nations Security Council||37,411,898||The sovereign states to whom the UN Charter of 1945 grants permanent seats on the UN Security Council. |- |||35,500,000||Largest ever multi-country empire, as of its greatest extent in 1920. |- |||31,462,574||Supranational political entity. |- |Africa||30,221,532||Second largest continent. |- |||29,797,500||Supranational political entity. |- | North Atlantic Treaty Organization (NATO)||26,552,127||Intergovernmental military alliance. |- |North America||24,490,000||Continent. |- |Mongol Empire||24,000,000||Multi-country empire, in 1309. |- |Far East||23,250,309||Geographic concept to call East Asia, Southeast Asia, and Russian Far East by European historically. |- |Warsaw Pact||23,140,845||Collective defense treaty led by Soviet Union. |- |Nearctic||22,900,000||One of the eight biogeographic realms of Earth. |- |||22,800,000||Multi-country empire, in 1895. |- |Sub-Saharan Africa||22,341,158||Region of Africa south of the Sahara Desert. |- |||22,402,200||Largest country in the world from 1922 until its dissolution in 1991. |- |Afrotropic||22,100,000||One of the eight biogeographic realms of the Earth. |- |Northern America||21,780,142||United Nations geoscheme region. Contains Canada, United States, Greenland, St. Pierre and Miquelon and Bermuda. |- |USMCA||21,578,137||Free trade agreement concluded between Canada, Mexico, and the United States. |- | South Atlantic Peace and Cooperation Zone||20,552,728||An organization between many South Atlantic nations. |- | Collective Security Treaty Organization (CSTO)||20,403,694||Intergovernmental military alliance in Eurasia. |- |||20,368,759||A regional intergovernmental organization of nine members, plus two founding non-member, post-Soviet republics in Eurasia. |- |Southern Ocean||20,327,000||Ocean. |- |||20,229,248||Economic union of states located in Eastern Europe, Western Asia, and Central Asia. |- |Latin America||20,111,457||Region in the Americas where Romance languages are predominantly spoken. |- |Neotropic||19,000,000||One of the eight biogeographic realms of the Earth. |- |South America||17,840,000||Continent. |- |/UNASUL||17,715,335||Supranational political entity including most nations of South America. |- |||17,125,200||Largest country in the world; crosses Europe and Asia. |- |||14,869,775||Officially called Southern Common Market. |- |||14,700,000|| Multi-country empire in Asia under the Yongzheng Emperor (r. 1723–1735) and his son the Qianlong Emperor (r. 1735–1796). |- |Arctic sea ice (maximum extent, February 2015)||14,540,000|| Oceanic feature. |- |Antarctica||14,200,000||Continent. |- |Arctic Ocean||14,056,000||Ocean. |- |Arable land (2012)||13,958,000||Land capable of being ploughed and used to grow crops. |- |||13,953,041||Supranational political entity. |- | Spanish Empire||13,700,000||Multi-country empire, in 1810; size is approximate. |- | Siberia||13,138,242||Traditional historic and geographic region of Russia. |- |East Asia||11,796,365||United Nations geoscheme region. Contains China, Mongolia, North Korea, South Korea and Japan. |- | Second French colonial empire||11,500,000||Multi-country empire, in 1920. |- | (ROC, including disputed areas)||11,420,000||Including disputed territories administered by Bhutan, Myanmar, Russia, Tajikistan, Afghanistan, Pakistan, Nepal, North Korea, the People's Republic of China, Mongolia, and India. |- |Umayyad (Arab Caliphate).||11,100,000||A caliphate, at its greatest territorial extent in 720. |- | Abbasid (Arab Caliphate).||11,100,000||A caliphate lasting from 750–1258, with its size in 750 shown. |- |Yuan Khanate, China||11,000,000|| Multi-country empire in Asia under the Yuan Khanate 1279–1368. Measured at its maximum extent in 1310. |- |Tang Empire, China||10,760,000|| Chinese Empire from 618–907. Size at greatest extent in 669. |- |Europe||10,180,000||Continent in classical antiquity. |- |||9,984,670||Second largest country in the world; largest country in North America, and in the Western Hemisphere. |- | (PRC, including disputed areas)||9,742,010||Largest country located entirely in Asia. Including PRC-administered area (Aksai Chin and Trans-Karakoram Tract, both territories claimed by India), South Tibet (controlled by India as the state of Arunachal Pradesh but claimed by China), and the disputed territories of Taiwan, Penghu, Kinmen, and the Matsu Islands which the Republic of China (Taiwan) has continued to govern after the PRC replaced it on the mainland; total of separate UN figures for Mainland China and the Special Administrative Regions of Hong Kong (1,099 km2) and Macau (26 km2). |- | (PRC, non-disputed areas)||9,706,961||Largest country located entirely in Asia. Excluding disputed territories not under PRC administration, i.e. excluding South Tibet (Indian state of Arunachal Pradesh) and Republic of China (Taiwan); total of separate UN figures for Mainland China and the Special Administrative Regions of Hong Kong (1,099 km2) and Macau (26 km2). |- |||9,522,055||Country in North America. Includes the 50 states and District of Columbia with Indian Reservations. Includes inland water area of 78,797 mi2 (204,083 km2) and Great Lakes water of 60,251 mi2 (156,049 km2); excludes coastal water area of 42,225 mi2 (109,362 km2) and territorial water area of 75,372 mi2 (195,213 km2) |- |Sahara||9,200,000||Largest hot desert in the world. |- |Australasian Mediterranean Sea||9,080,000||Mediterranean sea located in the area between Southeast Asia and Australasia. |- |Oceania||9,008,458||Geopolitical area including Australia and other islands and territories in the Pacific Ocean. |- |Xiongnu Empire |9,000,000 |Size at greatest extent in 176 BC. |- |||8,514,877||Largest country in South America. |- |||8,337,218||19th-century state in South America. |- |The Indies||8,063,879||A European Colonial term for South and Southeast Asia. |- |Australia and New Zealand||8,010,655||United Nations geoscheme region. Contains Australia, New Zealand, Norfolk Island, Christmas Island, Cocos (Keeling) Island and Heard and McDonald Islands. |- |Australasia||7,955,717||A subdivision of Oceania. |- |Economic Cooperation Organization||7,937,197||Asian political and economic intergovernmental organization. |- | Contiguous United States||7,902,634||Includes the 48 contiguous states and District of Columbia, but excludes Alaska and Hawaii. |- |Northern Africa||7,880,374||United Nations geoscheme region. Contains Egypt, Sudan, Libya, Tunisia, Algeria, Morocco and Western Sahara. |- |||7,686,848||Continent and country in Oceania. Includes Jervis Bay Territory (73 km2), Cocos (Keeling) Islands (14 km2), Christmas Island (135 km2) and Lord Howe Island (56 km2). Also includes the uninhabited Ashmore and Cartier Islands (5 km2), Coral Sea Islands Territory (0,9 km2), Heard and McDonald Islands (372 km2) and Macquarie Island (231 km2). Excludes claims on Antarctica (Australian Antarctic Territory, 6,119,818 km2). |- |Australasian realm||7,600,000||One of the eight biogeographic realms of the Earth. |- |Mainland Australia||7,595,342||The biggest landmass of Australia, does not include Tasmania, any other islands part of the country, or territories. |- |Indomalaya||7,500,000||One of the eight biogeographic realms of the Earth. |- |Middle East||7,207,575||Transcontinental region in Afro-Eurasia. |- |Akhand Bharat |7,015,501 |concept of a greater unified india |- |Eastern Africa||7,002,969||United Nations geoscheme region. Contains Ethiopia, Eritrea, Djibouti, Somalia, Uganda, Kenya, Tanzania, Rwanda, Burundi, Zambia, Zimbabwe, Mozambique, Malawi, Seychelles, Madagascar, Comoros and Mauritius. |- |Southern Asia||6,783,786||United Nations geoscheme region. Contains Iran, Afghanistan, Pakistan, India, Sri Lanka, Maldives, British Indian Ocean Territory, Nepal, Bhutan and Bangladesh. |- |Middle Africa||6,613,058||United Nations geoscheme region. Contains Chad, Cameroon, Central African Republic, Democratic Republic of Congo, Republic of Congo, Gabon, Equatorial Guinea, Sao Tome & Principe and Angola. |- |Ming China||6,500,000|| Chinese Empire after the overthrow of the Yuan Mongol dynasty 1368–1644. Measured at its maximum extent in 1450. |- |Eastern Han Dynasty||6,500,000||The Chinese Empire lasting from 25 – 220 AD. Size at greatest extent in 100 AD. |- |Rashidun Caliphate |6,400,000 |In 655. |- |Amazon basin ||6,300,000||Drainage basin of Amazon River. |- |Europe (excluding European Russia)||6,220,000||Traditional region. |- | Far Eastern Federal District||6,215,900||Federal district of Russia created May 2000. |- | Nordic Council||6,187,000||An official body for former inter-parliamentary between the Nordic countries. |- |West Africa||6,143,409||United Nations geoscheme region. Contains Mauritania, Mali, Niger, Cabo Verde, Guinea-Bissau, Guinea, Sierra Leone, Liberia, Cote d'Ivoire, Burkina Faso, Ghana, Togo, Benin and Nigeria. |- |Khanate of the Golden Horde||6,000,000||Multi-country empire in Europe and Asia; a Khanate remnant of the Mongol Empire, lasting from 1240–1502. Size is approximate at its apex in 1310. |- |Western Han Dynasty |6,000,000 |The Chinese Empire lasting from 206 BC – 9 AD. Size at greatest extent in 50 BC. |- |First Turkic Khaganate |6,000,000 |Size at greatest extent in 557. |- |Australian Antarctic Territory||5,896,500||Australian claim to Antarctica. |-