An image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element with negative refractive power has an object-side surface being convex and an image-side surface being concave. The second lens element with positive refractive power has an object-side surface and an image-side surface being both convex. The third lens element with positive refractive power has an object-side surface being concave and an image-side surface being convex. The fourth lens element with positive refractive power has an object-side surface being convex, and an image-side surface being concave at a paraxial region and being convex at a peripheral region, wherein the surfaces of the fourth lens element are aspheric.