A ultraviolet (UV) sterilization lamp, a UV sterilization module, and an air conditioner including a UV sterilization module are provided. The UV sterilization module may include a porous frame, a portion of which may be a mesh so as to allow a fluid to pass therethrough; a plurality of UV lamps provided on the mesh of the porous frame and including an external electrode on an outer surface thereof; a power supply connected to the plurality of UV lamps to supply power to the plurality of UV lamps; and a plurality of fixing portions configured to support the plurality of UV lamps and fixed to the porous frame. The plurality of fixing portions may be arranged to be spaced from each other such that the plurality of UV lamps may be arranged with a constant spacing. The constant spacing may be a shortest distance of about 8 cm or less to connect outer peripheral surfaces of the plurality of UV lamps adjacent to each other.