A multidirectional ultraviolet sensor includes a substrate and a UV-sensitive layer. The UV-sensitive layer contains nano-sized or micro-sized particles of a UV-sensitive material, which is attached to a top surface of the substrate by sintering process to enable sensing of ultraviolet light incident on the ultraviolet sensor from various directions. The UV-sensitive layer is in contact with a first and a second electrode layer, which are arranged at the top surface or the bottom surface the UV-sensitive layer in the same horizontal plane, or respectively at two opposite sides of the UV-sensitive layer. Since an impedance value of the UV-sensitive layer changes in response to an intensity of incident ultraviolet light, the intensity of the incident ultraviolet light is measured by detecting the impedance of the UV-sensitive layer.