Shimomaruko

{{More citations needed|date=August 2017}}

{{Infobox settlement

| name = Shimomaruko

| native_name = 下丸子

| native_name_lang = ja

| settlement_type = District

| image_skyline = Tokyo Route 11 -02.jpg

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| coordinates = {{coord|35|34|12|N|139|41|20|E|region:JP|display=inline,title}}

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| subdivision_type = Country

| subdivision_name = Japan

| subdivision_type1 = City

| subdivision_name1 = Tokyo

| subdivision_type2 = Ward

| subdivision_name2 = Ōta

| subdivision_type3 = Area

| subdivision_name3 = Kamata Area

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| unit_pref = Metric

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| population_as_of = December 1, 2015

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| population_total = 23,004

| population_density_km2 = auto

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| timezone1 = JST

| utc_offset1 = +9

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| postal_code = 146-0092

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| area_code = 03

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}}

{{nihongo|Shimomaruko|下丸子}} is a district of Ōta, Tokyo, Japan. As of December 1, 2015, the population in the district is 23,004. The postal code is {{not a typo|146-0092}}.{{cite web|url=http://www.zipcode-jp.com/modules/zipcode/viewzip.php?zcd=1460092|title=Zipcode Japan - Zipcode : 146-0092|website=zipcode-jp.com|accessdate=2017-08-29}}