Maros-Torda was an administrative county (comitatus) of the Kingdom of Hungary. Its territory is now in central Romania (eastern Transylvania) and has been administratively succeeded by county Mureàwhich consist of about half the territory of the previous Maros-Torda administrative county. Its county seat was Marosvásárhely (present-day Târgu MureÃÂ).
Maros-Torda county shared borders with the Hungarian counties Kolozs, Beszterce-Naszód, CsÃÂk, Udvarhely, Kis-Küküllà  and Torda-Aranyos. The river Mureàflowed through the county. Its area was 4,188 km<sup>2</sup> around 1910.
Maros-Torda county was formed in 1876 on the territory of the Székely seat of Marosszék and part of Torda County. In 1920, after the Treaty of Trianon, the county became part of Romania, except after the Second Vienna Award, between 1940 until the end of World War II, when much of the county's territory was awarded to Hungary. Today, its territory lies in the present (larger) Romanian county MureÃÂ.
Around 1910, the subdivisions of Maros-Torda county were: