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Largest Countries in the World (by land area) The largest country in the world is Russia with a land area of 16,299,981 KmÂ² (6,293,455 miÂ²), equivalent to 10.9 % of the total world's landmass of 148,940,000 KmÂ² (57,510,000 square miles). Below is the list of the largest 20 countries and, following, the full list of all countries and dependencies ranked by land area.
Area: total: 652,230 sq km. land: 652,230 sq km. water: 0 sq km. Definition: This entry includes three subfields. Total area is the sum of all land and water areas delimited by international boundaries and/or coastlines.Land area is the aggregate of all surfaces delimited by international boundaries and/or coastlines, excluding inland water bodies (lakes, reservoirs, rivers).ater area is the sum of the surfaces of all inland water bodies, such as lakes, reservoirs, or rivers, as delimited by international boundaries and/or coastlines. Source: CIA World Factbook-This page was last updated on June 30, 2015. 1  Area by year chart.