Aguilar de Segarra () is a municipality in the comarca of Bages, on the western edge of the comarca, in the province of Barcelona, Catalonia, Spain.
Aguilar de Segarra has several notable buildings: the Castle of Castellar, the Castle of Aguilar, and the churches of Sant Andreu d'Aguilar, Sant Miquel de Castellar, Santa Magdalena de Còdol-Rodon, Santa Maria de les Coromines and Santa Maria del Grauet.
According to Spanish census data, this is the population of Aguilar de Segarra in recent years.