The Arandilla is a river found in the southeast of Burgos province, Spain. It runs through the following municipalities:

Arandilla
Watershed of the Arandilla between the towns of Arandilla and Peñaranda de Duero
Location
CountrySpain
Physical characteristics
Source 
 • locationHuerta de Rey, Burgos, Castile and León, Spain
MouthDuero river
 • location
Aranda de Duero, Ribera del Duero, Burgos, Castile and León, Spain
 • elevation
802 m (2,631 ft)
Length51 km (32 mi)
Discharge 
 • locationAranda de Duero
Basin features
Tributaries 
 • leftDor, Espeja, Pilde
 • rightHozarroyo, Aranzuelo

41°40′09″N 3°41′17″W / 41.6692°N 3.6881°W / 41.6692; -3.6881