A kitchen sink sprayer, comprising a body enclosed in an outer enclosure for being gripped and provided with a coupling to a flexible water supply hose connected to a faucet for adjusting the flow-rate between a closed position and an open position, the body comprising a rod which has, at one end, a tip that is adapted to open selectively the access of the water to a duct for forming a central jet and to ducts for forming a peripheral jet, and is provided with means for actuation by the user, the means for actuating the rod having a tab which is connected directly to the rod in an intermediate position of the rod and protrudes from the enclosure of the sprayer, at its lateral surface, by an extent that is sufficient for contact grip by the user when it is necessary to actuate the rod in order to move it from one of its selection positions to the other and vice versa.