Tergu

{{Infobox Italian comune

| name = Tergu

| official_name = Comune di Tergu

| native_name = Zelgu

| image_skyline = Nostra signora di tergu, ext. 04.JPG

| imagesize =

| image_alt =

| image_caption = Nostra Signora di Tergu church

| image_shield =

| shield_alt =

| image_map =

| map_alt =

| map_caption =

| pushpin_map = Italy Sardinia

| coordinates = {{coord|40|52|N|8|43|E|type:city(579)_region:IT|display=inline}}

| coordinates_footnotes =

| region = Sardinia

| province = Sassari (SS)

| frazioni =

| mayor_party =

| mayor = Luca Ruzzu

| area_footnotes =

| area_total_km2 = 36.5

| population_footnotes = Population data from ISTAT

| population_total = 589

| population_as_of = 30 November 2014

| pop_density_footnotes =

| population_demonym = Targulani or Zelgulani

| elevation_footnotes =

| elevation_m = 284

| saint =

| day =

| postal_code = 07030

| area_code = 079

| website = {{official website|http://www.comuneditergu.it/}}

| footnotes =

}}

Tergu ({{langx|sdc|Zelgu}}) is a comune (municipality) in the Province of Sassari in the Italian region Sardinia, located about {{convert|190|km|mi}} north of Cagliari and about {{convert|20|km|mi}} northeast of Sassari in the Anglona historical regiona.

It is home to the Romanesque church of Nostra Signora di Tergu.