W20

W20 may refer to:


 * British NVC community W20, a scrub community in the British National Vegetation Classification system
 * Hansa-Brandenburg W.20, a German flying boat
 * Maya language (Australia)
 * Moses Lake Municipal Airport, in Washington, United States
 * PENTAX Optio W20, a digital camera
 * Samsung W20 5G, a smartphone
 * Small stellated dodecahedron
 * Toyota MR2 (W20), a sports car
 * Westerlund 1-20, a star