Mus spretus is endemic to the Mediterranean region, occurring in south-west Europe (southern France, much of the Iberian Peninsula and the Balearic Islands, Spain) and North Africa from Morocco through northern Algeria and Tunisia to northern Libya (Panteleyev 1998, Macholán 1999). In Europe, it is found in Portugal, Spain, the Balearic islands (Spain), and southern France. Its vertical range is from sea level to 1,800 m (L.J. Palomo pers. comm. 2006).