According to one embodiment, an organic electroluminescent element includes a first electrode, an organic layer, and a second electrode. The first electrode is light-transmissive. The organic layer is provided on the first electrode. The second electrode is provided on the organic layer. The second electrode is light-reflective and includes a first conductive portion and a second conductive portion. The first conductive portion extends in a first direction. The second conductive portion extends in a second direction intersecting the first direction. The second conductive portion intersects the first conductive portion. A length in the first direction of the first conductive portion is longer than 1 mm and not more than 47 mm. A length in the second direction of the second conductive portion is longer than 1 mm and not more than 47 mm.