Delazian (Persian: دلازيان, also Romanized as Delāzīān, Delāzeyān, Delāzīyān, Delāzīyān, and Deliāzān; also known as Dalījān)[1] is a village in Howmeh Rural District, in the Central District of Semnan County, Semnan Province, Iran. At the 2006 census, its population was 120, in 44 families.[2]The archaeological mound site of Delazian is located near the village. This site was surveyed and documented by Mohammad Mehryar and Ahmad Kabiri in the 1984s.[3] The site contains 2nd and 1st mill BC occupational remains. The Discovery of the Pointed barrel vault was the most important architectural remains in this important site.