Csanád was an administrative county (comitatus) of the Kingdom of Hungary.

The first seat of the county was Csanád (present-day Cenad, Romania).

In the Treaty of Karlowitz, the Ottoman Empire renounced its claims to the territories north of the Maros (Mureș) river.

Csanád county was reorganized in the returned territories (with greatly reduced size than in medieval times).

In 1920, the Treaty of Trianon assigned a small area in the southeast of the county (the town of Nădlac and the villages of Șeitin, Turnu and Dorobanți) to Romania.