Humanities › Geography Largest Islands in the World The Largest Islands in Size and the Largest Islands by Population Share Flipboard Email Print Ilulissat Icefjord in the Disko Bay of North Greenland. Cornelia Doerr/Photodisc/Getty Images Geography Basics Physical Geography Political Geography Population Country Information Key Figures & Milestones Maps Urban Geography By Matt Rosenberg Geography Expert M.A., Geography, California State University - Northridge B.A., Geography, University of California - Davis Matt Rosenberg is an award-winning geographer and the author of "The Handy Geography Answer Book" and "The Geography Bee Complete Preparation Handbook." our editorial process Matt Rosenberg Updated March 17, 2017 Below you will find a list of the largest islands in the world based on size or area followed by a list of the largest islands in the world based on population. Largest Islands by Area Great Britain Source: Times Atlas of the World Largest Islands by Population Source: Wikipedia