Müritz is a former Kreis (district) in the southern part of Mecklenburg-Vorpommern, Germany. It is named after the lake Müritz. Neighboring districts were (from the west clockwise) Parchim, Güstrow, Demmin, Mecklenburg-Strelitz, the district-free city Neubrandenburg and the district Ostprignitz-Ruppin in Brandenburg. The district was disbanded at the district reform of September 2011. Its territory has been part of the Mecklenburgische Seenplatte district since.

The district of Müritz constituted roughly the western half of the Müritz lakeland and the Müritz National Park. The lake Müritz has an area of 117 km²; it is the second largest lake of Germany after Lake Constance, and the largest lake entirely within the German borders.

Müritz District was established on June 12, 1994, by merging the previous districts of Röbel and Waren; along with a few municipalities from the districts of Malchin and Neustrelitz. This district was merged with the district of Mecklenburg-Strelitz and most of the district of Demmin at the district reform of September 2011, forming the new Mecklenburgische Seenplatte district.

The subdivisions of the district were (situation August 2011):