A terp, also known as a wierde, woerd, warf, warft, werf, wurt or værft, is an artificial dwelling mound found on the North European Plain that has been created to provide safe ground during storm surges, high tides and sea or river flooding. The various terms used reflect the regional dialects of the North European region. In English sources, terp appears to be by far the most common term used.

A terp is a mound created to provide safe ground during high tide and river floods, primarily found in the Netherlands and parts of Germany and Denmark.