Magnesia Prefecture

Magnesia Prefecture () was one of the prefectures of Greece. Its capital was Volos. It was established in 1899 from the Larissa Prefecture. The prefecture was disbanded on 1 January 2011 by the Kallikratis programme, and split into the regional units of Magnesia and the Sporades.
The toponym is ancient to the region. Ore that attracts iron is common in Magnesia, which is the origin of words such as "magnet" and "magnetism" as well as the chemical element "magnesium".