A jetted bathtub includes: a bathtub; a suction port opening in a wall of the bathtub and allowing water stored in the bathtub to be sucked therein; a pressurizer configured to suck water from the suction port, and pressurize and discharge the water; and a jet nozzle having a single tube held on the wall below a rim of the bathtub, the jet nozzle being configured to eject water introduced into the tube so that the water is ejected into the bathtub with its ejection direction being varied. The tube includes: a running water introduction section configured to receive water supplied from the pressurizer; a channel cross-section shrinking section communicating with the running water introduction section on the downstream side of the running water introduction section, and having a reduced channel cross section relative to the running water introduction section; and a chamber communicating with the channel cross-section shrinking section on the downstream side of the channel cross-section shrinking section, and having at its upstream end a channel cross-section abrupt expansion section with a channel cross section abruptly expanded relative to the channel cross-section shrinking section and at its downstream end an ejection port facing the inside of the bathtub.