A fluid dispenser comprising a fluid reservoir (R) in which the fluid is stored under pressure, and a fluid outlet valve that is actuatable from a closed position to an open position so as to define a dispenser orifice (62), the outlet valve including a movable member (51) that bears in sealed manner against a seat (63) in the closed position and that is not in contact with the seat (63) in the open position, the movable member (51) being axially movable and resiliently biased against the seat (63), the dispenser also comprising an actuator member (61) for moving the movable member (51) between the closed and open positions, the fluid dispenser being characterized in that the dispenser orifice (62) and the actuator member (61) are both formed by a rotary disk (6).