The Malacky District (Slovak: okres Malacky) is a district in the Bratislava Region of western Slovakia.

[1] It lies north from Bratislava on Záhorská nížina lowland.

The administrative seat is its largest town, Malacky.

In the Malacky District the industrial park Eurovalley is located, on area of 1,500 hectares (3,700 acres) with several thousand employees.

Second largest town is Stupava, which is located close to Bratislava.