Tergast

{{Infobox German place

| Name = Tergast

| German_name =

| Art = Village

| image_photo = ChurchTergast.JPG

| imagesize =

| image_caption = Church of Tergast

| Wappen =

| image_flag =

| coordinates = {{coord|53.33629|N|7.36961|E|display=title|region:DE_type:city_source:GNS-enwiki}}

| Lageplan =

| Lageplanbeschreibung =

| Bundesland = Lower Saxony

| Regierungsbezirk =

| Landkreis = Leer

| Municipality = Moormerland

| Höhe = 4

| elevationmax =

| Fläche = 9.95

| area_metro =

| pop_metro = 457

| PLZ = 26802

| Vorwahl = 04924

| Kfz =

| Gemeindeschlüssel =

| Gliederung =

| Website =

}}

Tergast is a village in the region of East Frisia, in Lower Saxony, Germany. Administratively, it is an Ortsteil of the municipality of Moormerland. Tergast is 1.5 kilometers to the northeast of Oldersum and has a population of 457.

The first known mention of the village is as Gast in a deed of gift from the Langen monastery in 1401. Its current name could refer to the fact that the village is built on a high sand ridge, known as a geest. The Church of Tergast was built on the highest point of this ridge somewhere in the second half of the 13th century.{{Cite web |url=https://bibliothek.ostfriesischelandschaft.de/wp-content/uploads/sites/3/dateiarchiv/3059/Tergast.pdf |title=Tergast, Gemeinde Moormerland, Landkreis Leer |first1=Klaus |last1=Euhausen |website=Ostfriesisches Landschaft |language=de |access-date=21 March 2024}}

The Emden municipal waterworks with several reservoirs is located in Tergast.