<p>Disclosed is a technique to efficiently disperse a liquid in atomized form by reducing unavailable liquid. Specifically disclosed is a liquid spray nozzle (30) comprising: a body (40) having a jet orifice (45) for jetting the liquid; a collision surface (53) with which a jet flow from the jet orifice (45) collides; and a support member (51) which is disposed at a part of the periphery portion of the jet orifice (45) in the body (40) and supports the collision surface (53). The collision surface (53) to disperse the jet flow in atomized form is oblique to the jetting direction of the jet flow and causes the jet flow having collided with the collision surface (53) to be dispersed toward a main dispersion region (RG1). The support member (51) is disposed outside the main dispersion region (RG1) of the jet flow having collided with the collision surface (53).</p>
