Rohan was a great kingdom of Men, located in the land once called Calenardhon, situated in the great vale between the Misty Mountains and the White Mountains to the south.

The land of Rohan extended from the fords of the river Isen in the west, up to the shores of the river Anduin in the east. The forest of Fangorn lay within the borders of Rohan, and Lorien lay to the north of the river Limlight.

The land was known as Rohan to the Men of Gondor, and its people the Rohirrim, meaning 'the Horse-lords', but the people of Rohan called themselves the Eorlingas, sons of Eorl the Young, first King of Rohan, as the land of Calenardhon was given in gift to Eorl and his people by Cirion, Steward of Gondor, in thanks for their service to Gondor in battle against the Balchoth.

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