Eyalet of Rûm, later named as the Eyalet of Sivas, is an Ottoman eyalet in northern Anatolia, founded following Bayezid I's conquest of the area in the 1390s.

The capital is the city of Amasya, which is then moved to Tokat and later to Sivas.

Its reported area in the nineteenth century iss 28,912 square miles (74,880 km2).

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