A palaeomagnetic study was carried out in the region of Lima (Peru), on 55 sites (564 cores) of middle Cretaceous to Late Miocene age, distributed along three northeast-southwest transverses which cross the Western Cordillera of the Central Andes. Over the entire studied area, the results consistently yield westerly declinations corresponding to post-Cretaceous and post-Eocene counterclockwise rotations with respect to stable South America, of 16° ± 6° and 13.7° ± 8.1°, respectively, when compared to the ill-defined reference poles of this continent. These new results are in good agreement with previous ones from the Central Peruvian Andes and support the model recently proposed for the uplift of the Andean Cordillera. © 1992.