Biggest waterfalls in Iceland

This is a ranking of falls whose height our sources actually publish — 48 of the 425 we map carry a number at all, and this table lists the ones we have checked against their real coordinates. It is not a claim that no taller unnamed drop exists in Iceland; there almost certainly is one, in a canyon nobody has measured. Where a guide elsewhere ranks fifty falls by height, ask where the fifty numbers came from.

Heights come from OpenStreetMap, Wikidata and natt.is via our waterfall dataset; the Wikipedia text quoted on this page is used under CC BY-SA and linked per row. A single figure for a waterfall is always a simplification — most of these drop in stages, and “total height” and “main drop” are different numbers.

The reason this table exists: search “biggest waterfall in Europe” and you get confident, mutually contradictory answers. On one afternoon in July 2026 the top results published Dettifoss at both 93 and 193 cubic metres per second, and Morsárfoss at both 228 and 240 metres. Nobody shows their working. We hold no flow measurements, so we publish none as ours — and where our recorded height differs from the number a guidebook quotes, we say that rather than quietly matching them.

If you want the falls that feel biggest rather than the ones that measure biggest, the honest answer is Dettifoss for sheer force, Dynjandi for scale, Skógafoss for standing close enough to get soaked, and Gullfoss for the two-stage drop into the canyon. Sizes and how to reach each one are on the individual pages.