Sostegno

{{Infobox Italian comune

| name = Sostegno

| official_name = Comune di Sostegno

| native_name =

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| image_shield = Sostegno-Stemma.png

| shield_size = 100px

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| coordinates = {{coord|45|39|N|8|16|E|type:city(764)_region:IT|display=inline}}

| coordinates_footnotes =

| region = Piedmont

| province = Biella (BI)

| frazioni = Casa del Bosco, Asei

| mayor_party =

| mayor = Giuseppe Framorando

| area_footnotes =

| area_total_km2 = 18.1

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

| population_total = 761

| population_as_of = 31 December 2010

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| population_demonym = Sostegnèsi

| elevation_footnotes =

| elevation_m = 378

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| postal_code = 13868

| area_code = 015

| website = {{url|https://www.comune.sostegno.bi.it/}}

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Sostegno is a comune (municipality) in the Province of Biella in the Italian region Piedmont, located about {{convert|80|km|mi}} northeast of Turin and about {{convert|20|km|mi}} northeast of Biella.

Sostegno borders the following municipalities: Crevacuore, Curino, Lozzolo, Roasio, Serravalle Sesia, Villa del Bosco. Economy is based on the production of apples and wine.