Casalarreina is a town located in the province of La Rioja, Spain.

It is located 47 kilometres (29 mi) from Logroño, the capital of La Rioja, in the north-west.

The first documents about the village were around 1170 by Aldonza Ruiz de Castro.

The town borders the Basque-Aragonese freeway.

This article about a location in La Rioja, Spain is a stub.