Marignieu

{{Use dmy dates|date=July 2023}}

{{short description|Commune in Auvergne-Rhône-Alpes, France}}

{{Expand French|topic=geo|date=December 2008|Marignieu}}

{{Infobox French commune

|name = Marignieu

|commune status = Commune

|image = Mairie Marignieu 1.jpg

|caption = Town hall

|arrondissement = Belley

|canton = Belley

|INSEE = 01234

|postal code = 01300

|mayor = Pascal Demange{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/fr/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|website=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=2 December 2020|language=fr|access-date=6 May 2024|archive-date=28 June 2020|archive-url=https://web.archive.org/web/20200628030259/https://www.data.gouv.fr/fr/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|url-status=live}}

|term = 2020–2026

|intercommunality =

|coordinates = {{coord|45.7978|5.7219|format=dms|display=inline,title}}

|elevation m = 358

|elevation min m = 309

|elevation max m = 503

|area km2 = 3.55

|population = {{France metadata Wikidata|population_total}}

|population date = {{France metadata Wikidata|population_as_of}}

|population footnotes = {{France metadata Wikidata|population_footnotes}}

}}

Marignieu ({{IPA|fr|maʁiɲø}}) is a commune in the Ain department in eastern France.