Düylün (also, Dyuglyun and Dyuylyun) is a village and municipality in the Ordubad Rayon of Nakhchivan, Azerbaijan. It is located in the near of the Ordubad-Nakhchivan highway, 17 km in the north-west from the district center. Its population is busy with gardening, grain growing and farming. There are secondary school, library, culture house, mosque and pir (sanctuary) of the Middle Ages in the village. It has a population of 787.