Gonnostramatza

{{Infobox Italian comune

| name = Gonnostramatza

| official_name = Comune di Gonnostramatza

| native_name =

| image_skyline =Gonnostramatza - Panorama (02).jpg

| imagesize =

| image_alt =

| image_caption =

| image_shield = Gonnostramatza-Stemma.png

| shield_alt =

| image_map =

| map_alt =

| map_caption =

| pushpin_map = Italy Sardinia

| coordinates = {{coord|39|41|N|8|50|E|type:city(968)_region:IT|display=inline}}

| coordinates_footnotes =

| region = Sardinia

| province = Oristano (OR)

| frazioni =

| mayor_party =

| mayor = Maria Agnese Abis

| area_footnotes =

| area_total_km2 = 17.64

| population_footnotes =

| population_total = 784

| population_as_of = 1 January 2018All demographics and other statistics: National Institute of Statistics (Italy) (Istat).

| pop_density_footnotes =

| population_demonym = Gonnostramatzesi (Sardinian: Tramatzesusu)

| elevation_footnotes =

| elevation_m = 104

| saint = St. Michael Archangel

| day = 29 September

| postal_code = 09093

| area_code = 0783

| website = {{official website|http://www.comune.gonnostramatza.or.it}}

| footnotes =

}}

Gonnostramatza, Gonnos-Tramatza in sardinian language, is a comune (municipality) in the Province of Oristano in the Italian region Sardinia, located about {{convert|60|km|0|abbr=off}} northwest of Cagliari and about {{convert|40|km|mi}} southeast of Oristano, in the Marmilla.