Dunajská Lužná is a municipality (village) in the Bratislava Region of western Slovakia in Senec District.
Dunajská Lužná lies approximately 15 km from the capital city of Bratislava towards Dunajská Streda and Komárno. It was founded on 1 January 1974 consisting of three formerly separate villages - Nové Košariská (former German name: Mischdorf, former Hungarian name: Misérd), Jánošíková (former name: Dienesdi or Dénesd) and Nová Lipnica (former German name: Tartsendorf, former Hungarian name: Torcs). Dunajská Lužná belongs to the vicinity of Bratislava. There is increasing building activity because of new inhabitants coming from Bratislava or other cities.
Not far from the municipality towards Senec lie two lakes - Malá Voda and Piesková Jama. They are used for fishing and bathing and in summer months they are quite crowded. Near the township runs a dam, protecting the villages and townships all the way from Bratislava to Gabčíkovo from flooding of the Danube River.
There is a large Roman Catholic community in Dunajská Lužná with the Church, devoted to "The Elevation of the Holy Cross". Besides Roman Catholics there are also Lutherans and other religions.
The village crest shows St. Martin of Tours.
The municipality of Dunajská Lužná is also well known in European archaeology for its burial mound which dates from around 700 - 500 BCE. During the archaeological survey in the "Nové Košariská" part of the municipality, a necropolis with fire-type burials and a central earth-grave was studied. Archaeogolists found richly decorated ceramic bins here, although only few metallic objects were retrieved.
In January 2004, a permanent exposition with the name "History and present of the municipality" was opened in Dunajská Lužná and it provides visitors with closer view of the past and present life of the Township.
Due to its proximity near Austria and Hungary the village boasts a strong ethnic mix, with up to fourteen different nationalities calling the village home.