Langast

{{Infobox French commune

|name = Langast

|native name = Lanwal

|image = Langast (22) Église Saint-Gal 05.JPG

|caption = The church of Saint-Gal, in Langast

|coordinates = {{coord|48.2808|-2.6625|format=dms|display=inline,title}}

|INSEE = 22100

|postal code = 22150

|arrondissement = Saint-Brieuc

|canton = Guerlédan

|commune = Plouguenast-Langast

|elevation min m = 104

|elevation max m = 240

|area km2 = 20.45

|population = 565

|population date = 2022

|population footnotes = {{cite web|url=https://www.insee.fr/fr/statistiques/fichier/8290591/ensemble.pdf|title=Populations de référence 2022|language=fr|trans-title=Reference populations 2022|publisher=INSEE|date=December 2024}}

}}

Langast ({{IPA|fr|lɑ̃ɡa}}; {{langx|br|Lanwal}}; Gallo: Langau) is a former commune in the Côtes-d'Armor department of Brittany in northwestern France. On 1 January 2019, it was merged into the new commune Plouguenast-Langast.[https://www.legifrance.gouv.fr/eli/arrete/2018/10/19/TERB1833239A/jo/texte Arrêté préfectoral] 19 October 2018 {{in lang|fr}}