The Razlog Valley (Bulgarian: Разложка котловина, Razlozhka kotlovina) is a valley in southwestern Bulgaria located between the high Rila (to the north and northwest), Pirin (to the south and southwest) and Rhodope Mountains (to the east). The nature of the valley was influenced by both the Alpine character of Rila and Pirin and the Mediterranean climate of the Aegean Sea from the south.