Riparian Rights, in law, the rights of a landowner whose property is bounded by a non-navigable stream or river to the reasonable use of its banks, bed, or water. The landowner cannot divert the natural course of the water, pollute it, or remove so much that the rights of other owners of riparian land would be curtailed.

The term riparian is also often used to describe land bounded by the sea or by a lake. This land, however, is more properly termed littoral.