Hesar-e Pain

{{for multi|the village in West Azerbaijan Province|Hesar-e Pain, West Azerbaijan|the village in Zanjan Province|Hesar-e Pain, Zanjan}}

{{Infobox settlement

| official_name = Hesar-e Pain

| native_name = حصارپائين

| settlement_type = village

| pushpin_map = Iran

| mapsize = 150px

| subdivision_type = Country

| subdivision_name = {{flag|Iran}}

| subdivision_type1 = Province

| subdivision_name1 = Tehran

| subdivision_type2 = County

| subdivision_name2 = Damavand

| subdivision_type3 = Bakhsh

| subdivision_name3 = Central

| subdivision_type4 = Rural District

| subdivision_name4 = Tarrud

| leader_title =

| leader_name =

| established_title =

| established_date =

| area_total_km2 =

| area_footnotes =

| population_as_of = 2006

| population_total = 421

| population_density_km2 = auto

| timezone = IRST

| utc_offset = +3:30

| timezone_DST = IRDT

| utc_offset_DST = +4:30

| coordinates = {{coord|35|40|02|N|52|01|48|E|region:IR|display=inline,title}}

| elevation_m = 1820

| area_code =

| website =

| footnotes =

}}

Hesar-e Pain ({{langx|fa|حصارپائين}}, also Romanized as Ḩeşār-e Pā’īn, Ḩeşar Pā’īn, and Hisār Pāīn; also known as Ḩeşār-e Pā’īn va Qūrdlū){{GEOnet3|-3066460|Hesar-e Pain}} is a village in Tarrud Rural District, in the Central District of Damavand County, Tehran Province, Iran. At the 2006 census, its population was 421, in 109 families.{{IranCensus2006|23}}