Cromstrijen

{{Infobox settlement

| name = Cromstrijen

| settlement_type = Former municipality

| image_skyline = Klaaswaal - watertoren van dichtbij.jpg

| image_alt =

| image_caption = Water tower in Klaaswaal

| image_flag = Flag of Cromstrijen.svg

| flag_size = 100x67px

| flag_alt =

| image_shield = Coat of arms of Cromstrijen.svg

| shield_size = 100x80px

| shield_alt =

| image_map = Map - NL - Municipality code 0611 (2009).svg

| map_alt = Highlighted position of Cromstrijen in a municipal map of South Holland

| map_caption = Location in South Holland

| coordinates = {{coord|51|44|N|4|26|E|region:NL|display=inline,title}}

| coordinates_footnotes =

| subdivision_type = Country

| subdivision_name = Netherlands

| subdivision_type1 = Province

| subdivision_name1 = South Holland

| established_title = Established

| established_date = 1 January 1984

| extinct_title = Merged

| extinct_date = 2019

| unit_pref = Metric

| area_footnotes = {{Dutch municipality total area|dataref}}

| area_total_km2 = {{Dutch municipality total area|Cromstrijen}}

| area_land_km2 = {{Dutch municipality land area|Cromstrijen}}

| area_water_km2 = {{Dutch municipality water area|Cromstrijen}}

| elevation_footnotes = {{cite web

|url = http://www.ahn.nl/postcodetool

|title = Postcodetool for 3281LK

|trans-title=|language = Dutch

|author =

|date =

|work = Actueel Hoogtebestand Nederland

|publisher = Het Waterschapshuis

|accessdate = 18 July 2013}}

| elevation_m = 0

| elevation_max_footnotes =

| elevation_max_m =

| elevation_min_footnotes =

| elevation_min_m =

| population_footnotes = {{Dutch municipality population|dataref}}

| population_total = {{Dutch municipality population|Cromstrijen}}

| population_as_of = {{MONTHNAME|{{Dutch municipality population|popbasemonth}}}} {{Dutch municipality population|popbaseyear}}

| population_density_km2 = {{Dutch municipality population density|Cromstrijen}}

| population_demonym =

| timezone1 = CET

| utc_offset1 = +1

| timezone1_DST = CEST

| utc_offset1_DST = +2

| postal_code_type = Postcode

| postal_code = 3280–3281, 3286

| area_code_type = Area code

| area_code = 0186

| twin1 =

| twin1_country =

| website = {{URL|1=http://www.cromstrijen.nl}}

| footnotes =

}}

Cromstrijen ({{IPA|nl|krɔmˈstrɛiə(n)|lang|306 Cromstrijen.ogg}}; Cromstrien in local dialect) was a municipality on the Hoeksche Waard Island in the western Netherlands, in the province of South Holland. The municipality covers an area of {{convert|{{Dutch municipality total area|Cromstrijen}}|km2|abbr=on}} of which {{convert|{{Dutch municipality water area|Cromstrijen}}|km2|abbr=on}} is water. It was formed on 1 January 1984, when the municipalities on the Hoeksche Waard were merged into larger municipalities. On 1 January 2019 it was merged with the municipalities of Binnenmaas, Korendijk, Oud-Beijerland, and Strijen to form the municipality of Hoeksche Waard.

The municipality of Cromstrijen consists of the communities Klaaswaal and Numansdorp (townhall).

Its population was {{formatnum:{{Dutch municipality population|Cromstrijen}}}} in {{YEAR|{{Dutch municipality population|popbaseyear}}}}.