Coolus

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

{{For|the genus of butterflies|Coolus (butterfly)}}

{{Infobox French commune

|name = Coolus

|commune status = Commune

|image = Monument aux morts Compertrix.jpg

|caption = The war memorial in Coolus

|image coat of arms = Blason Coolus.svg

|arrondissement = Châlons-en-Champagne

|canton = Châlons-en-Champagne-1

|INSEE = 51168

|postal code = 51510

|mayor = Pierre Charlet{{cite web|title=Répertoire national des élus: les maires|url=https://www.data.gouv.fr/fr/datasets/r/2876a346-d50c-4911-934e-19ee07b0e503|publisher=data.gouv.fr, Plateforme ouverte des données publiques françaises|date=13 September 2022|language=fr}}

|term = 2020–2026

|intercommunality = CA Châlons-en-Champagne

|coordinates = {{coord|48.9247|4.355|format=dms|display=inline,title}}

|elevation m = 84

|elevation min m = 82

|elevation max m = 137

|area km2 = 13.18

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

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

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

}}

Coolus ({{IPA|fr|kɔly}}) is a commune in the Marne department in north-eastern France. It gave its name to the Coolus helmet, a type of ancient Celtic and Roman helmet.