Biassono

{{Infobox Italian comune

| name = Biassono

| official_name = Comune di Biassono

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

| image_skyline = Torre Acquedotto Biassono.jpg

| imagesize =

| image_alt = A red brick clock tower and adjacent buildings

| image_caption = Aqueduct Tower

| image_shield = Biassono-Stemma.svg

| shield_size = 80px

| image_map =

| map_alt =

| map_caption =

| pushpin_label_position =

| pushpin_map_alt =

| coordinates = {{coord|45|38|N|9|16|E|type:city(11,269)_region:IT|display=inline}}

| coordinates_footnotes =

| region = Lombardy

| province = Monza and Brianza (MB)

| frazioni = San Giorgio al Lambro

| mayor_party = Lega Nord

| mayor = Luciano Casiraghi{{when|date=June 2016}}

| area_footnotes =

| area_total_km2 = 4.8

| population_footnotes =

| population_total = 11776

| population_as_of = 2009All demographics and other statistics: Italian statistical institute Istat.

| pop_density_footnotes =

| population_demonym = Biassonesi

| elevation_footnotes =

| elevation_m = 191

| twin1 =

| twin1_country =

| saint = St. Martin

| day = Third Monday in September

| postal_code = 20853

| area_code = 039

| website = {{URL|http://www.biassono.org/}}

| footnotes =

}}

Biassono (Brianzöö: {{lang|lmo|Biassòn}}) is a comune (municipality) in the Province of Monza and Brianza in the Italian region Lombardy, located about {{Convert|20|km|mi}} northeast of Milan.

Biassono borders the following municipalities: Lesmo, Arcore, Macherio, Lissone, Monza, Vedano al Lambro, Villasanta.

Biassono is noteworthy because of its location situated to the northwest of the Autodromo Nazionale Monza, constructed in the park of Monza's Royal Villa.

It opened in 1922, making it the oldest Grand Prix venue that the FIA Formula One World Championship still uses for the annual Gran Premio d'Italia.{{citation needed|date=October 2011}}

Biassono is crossed by the Lambro river in San Giorgio al Lambro, a small suburb of the municipality.