A light emitting device according to the embodiment includes a first light emitting structure including a first conductive first semiconductor layer, a first active layer, and a second conductive second semiconductor layer; a second light emitting structure including a first conductive third semiconductor layer, a second active layer, and a second conductive fourth semiconductor layer; a first electrode electrically connected to the first conductive first semiconductor layer and disposed under the first light emitting structure; a second electrode electrically connected to the second conductive second semiconductor layer and disposed under the first light emitting structure; a third electrode electrically connected to the first conductive third semiconductor layer and disposed under the second light emitting structure; a fourth electrode electrically connected to the second conductive fourth semiconductor layer and disposed under the second light emitting structure; a first contact portion provided through the first light emitting structure and including a first region electrically connected to the first electrode and a second region making contact with a top surface of the first conductive first semiconductor layer; a second contact portion electrically connected to the second and third electrodes; and a third contact portion provided through the second light emitting structure and including a first region electrically connected to the third electrode and a second region making contact with a top surface of the first conductive third semiconductor layer.