There are provided a lighting lens, a lighting lens array, and a lighting apparatus. The lighting lens may include an incidence part to receive light from a light source and an emission part to emit light provided from the incidence part. The incidence part may have a concave region that contains a light source and a first protrusion at a rear side of the light source that protrudes downwards from a top surface of the concave region. The emission part may include a dome-shaped part that encloses the incidence part and a second protrusion at the rear side of the light source that protrudes upwards from a top surface of the dome-shaped part. A lowermost portion of the emission part may be formed at a first plane, and an angle between an outer surface of the emission part and the first plane is an obtuse angle.