Arosio

{{for|the village Arosio in Switzerland|Arosio, Switzerland}}

{{Use dmy dates|date=October 2022}}

{{Infobox Italian comune

| name = Arosio

| official_name = Comune di Arosio

| native_name = {{native name|lmo|Aroeus}}

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| coordinates = {{coord|45|43|N|9|13|E|type:city(4,521)_region:IT|display=inline,title}}

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| region = Lombardy

| province = Province of Como (CO)

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| area_footnotes =

| area_total_km2 = 2.7

| population_footnotes =

| population_total = 4521

| population_as_of = Dec. 2004

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| population_demonym = Arosiani

| elevation_footnotes =

| elevation_m = 300

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| saint = SS. Nazario e Celso

| day = 28 July

| postal_code = 22060

| area_code = 031

| website = {{official website|1=http://www.comune.arosio.co.it/hh/index.php?&jvs=1}}

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}}

Arosio (Brianzöö: {{lang|lmo|Aroeus}}; locally {{lang|lmo|Roeus}}) is a comune (municipality) in the Province of Como in the Italian region Lombardy, located about {{convert|30|km|mi}} north of Milan and about {{convert|15|km|mi|0}} southeast of Como. As of 31 December 2004, it had a population of 4,521 and an area of {{convert|2.7|km2|mi2}}.All demographics and other statistics: Italian statistical institute Istat.

Arosio borders the following municipalities: Carugo, Giussano, Inverigo.

Arosio is a valuable town in Brianza a geographical area at the foot of the Alps, and is a part of the Parco della Valle del Lambro.

It is crossed by two important roads named Nuova Vallassina and Novedratese

The town hosted the Institute for Invalids where Don Carlo Gnocchi founded the Federation for Mutilated Children, in 1952 began the Juvenile Foundation, today known as the Don Carlo Gnocchi – ONLUS Foundation.

The bird observatory Osservatorio Ornitologico di Arosio was established in 1710. It has a museum.