Mureș (Romanian pronunciation: [ˈmureʃ], Hungarian: Maros megye) is a county (județ) of Romania, in the historical region of Transylvania, with the administrative centre in Târgu Mureș.

In Hungarian, it is known as Maros megye ([ˈmɒroʃ ˈmɛɟɛ]), and in German as Kreis Mieresch. Under Hungarian administration, from 1876 to 1918, there was a county with similar name, Maros-Torda County.

The county has a total area of 6,714 km².

The northeastern side of the county consists of the Călimani and Gurghiu Mountains and the sub-Carpathian hills, members of the Inner Eastern Carpathians. The rest of the county is part of the Transylvanian Plateau, with deep but wide valleys.

The main river crossing in the county is the Mureș River. The Târnava Mare River and the Târnava Mică River also cross the county.

In 2011, Mureș had a population of 550,846 and the population density was 82/km².

In terms of religion:

Some of the main tourist attractions in the county are: