Seljalandsfoss is one of the most famous waterfalls of Iceland. It is very picturesque and therefore its photo can be found in many books and calendars. It was a waypoint during the first leg of The Amazing Race 6.

Seljalandsfoss is situated in between Selfoss and Skógafoss at the road crossing of Route 1 (the Ring Road) with the track going into Þórsmörk.

This waterfall of the river Seljalandsá drops 60 metres (200 ft) over the cliffs of the former coastline. It is possible to go behind the waterfall.