Barby is a village and civil parish about 5 miles (8 km) north of Daventry in Northamptonshire, England.

Rains Brook, a tributary of the River Leam, forms the parish and county boundary northwest of the village.

[7] The Oxford Canal was dug through the parish in the early 1770s, passing about 1+1⁄2 miles (2.4 km) west of the village.

South of Barby village is an early 19th-century former tower mill,[8] which has been converted into a private home.

The Great Central Main Line from Nottingham Victoria to London Marylebone was built through the west of the parish in the 1890s and opened in 1899.

The M45 motorway was built through the parish in the late 1950s and opened in 1959, passing about 1⁄2 mile (800 m) north of the village.

[9] There are a general shop and post office, a garden centre, a village hall and a children's play area.

Stagecoach in Warwickshire bus route 10 runs hourly between Rugby and Daventry via Barby.