"Silver, on a black band with three silver towers".  

Originally the coat of arms of local man Sir John de Horbiry, who was granted the Manor for life in 1302 by the Earl of Warenne for his services as Steward of the area.  

The coat of arms was adopted by Horbury Urban District Council. They set the towers upright on the bend instead of lying along it, and added the motto "Pro bono oppido" - meaning "For the good of the town".