Mettmann (German pronunciation: [ˈmɛtman]) is a Kreis (district) in the middle of North Rhine-Westphalia, Germany.

Neighboring are the Ennepe-Ruhr, Rhein-Kreis Neuss, Rheinisch-Bergischer Kreis and the district-free cities Cologne, Leverkusen, Wuppertal, Solingen, Düsseldorf, Duisburg, Mülheim, Essen.

After the Congress of Vienna the area went to Prussia in 1816 as part of the province Westphalia, and the first district Mettmann was created.

The district Mettmann is located just south of the Ruhr area, next to the big cities of Düsseldorf.

In the black border it has the symbols for the two most important industries of the district - the production of locks, and agriculture.