Barby is a village and civil parish about 5 miles north of Daventry in Northamptonshire, England. The 2011 Census recorded the parish population as 2,336. Barby is located right off the M45 motorway a short spur from the M1 motorway to the A45 Trunk Road. To the northwest and southwest the parish boundary forms part of the county boundary with Warwickshire, and the village is only about 4 miles southeast of Rugby.