Le Port-Marly

{{Infobox French commune

|name = Le Port-Marly

|commune status = Commune

|image = Église StLouis PortMarly.jpg

|caption = Église Saint-Louis in Le Port-Marly

|image coat of arms = Blason ville fr Le Port-Marly (Yvelines).svg

|arrondissement = Saint-Germain-en-Laye

|canton = Chatou

|INSEE = 78502

|postal code = 78560

|mayor = Cédric Pemba-Marine{{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}}

|party = MoDem

|term = 2020–2026

|intercommunality = CA Saint Germain Boucles Seine

|coordinates = {{coord|48.8967|02.1106|format=dms|display=inline,title}}

|elevation m = 24

|elevation min m = 22

|elevation max m = 108

|area km2 = 1.44

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

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

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

}}

Le Port-Marly ({{IPA|fr|lə pɔʁ maʁli}}) is a commune in the outer western suburbs of Paris, France. It is located in the Yvelines department in the Île-de-France region, north of Versailles. In 2019, Le Port-Marly had a population of 5,481.