Ripuarian may refer to:

• Ripuarian Franks, a subset of Frankish people who lived in the Rhineland
• Ripuarian language, a West Central German dialect group
• Riparian water rights (or simply riparian rights) a system for allocating water among those who possess land along its path
• Riparian zone (or riparian area), the interface between land and a river or stream
• Riparian-zone restoration, the ecological restoration of riparian zone habitats of streams, rivers, springs, lakes, floodplains, and other hydrologic ecologies

• London Stone (riparian), the name given to a number of boundary stones which stand beside the rivers Thames and Medway, which formerly marked the limits of jurisdiction of the City of London