Water jet

Water jet may refer to:
 * A jet of water under pressure, like in an ornamental fountain or drain cleaner
 * Pump-jet, a marine propulsion mechanism for jetskis and other types of boats
 * Water jet cutter, a tool for cutting and the machining of engineering materials
 * Water-jet printer, a printer that makes use of water instead of ink
 * Dental water jet, see Oral irrigator
 * Jet spray, see Bidet shower