The hand pump sprayer and system for dispensing viscous liquids are provided. A nozzle is rotatably mounted around the delivery passageway of a hand pump sprayer. The nozzle is interconnected to the trigger of the hand pump sprayer so that the nozzle rotates, upon pulling of the trigger, simultaneously with the discharge of the liquid to the atmosphere. The nozzle rotates about an axis of rotation through the center of the discharge end of the nozzle through an angle of rotation from about 90.degree. to about 360.degree., desirably from 180.degree. to 360.degree. and preferably 270.degree. or more. Desirably the nozzle has two discharge outlets which direct fluid expelled from the hand pump sprayer along intersecting discharge axes. Simultaneously as the fluid is discharged along the intersecting axes, the nozzle is rotated about the axis of rotation. The resulting dispensed liquid has a high degree of atomization and a desirable round spray pattern.