According to one embodiment, a liquid crystal display device includes a first substrate including a gate line, a source line, a switching element, a first pixel electrode electrically connected to the switching element, an interlayer insulation film covering the first pixel electrode, a second pixel electrode which is located on the interlayer insulation film, is electrically connected to the first pixel electrode and includes a main pixel electrode, and a first main common electrode extending along the source line, the first pixel electrode including an edge portion which is located closer to the source line and the first main common electrode than to the main pixel electrode, a second substrate, and a liquid crystal layer.