Banbury Road is a major arterial road in Oxford, England, running from St Giles' at the south end, north towards Banbury through the leafy suburb of North Oxford and Summertown, with its local shopping centre. Parallel and to the west is the Woodstock Road, which it meets at the junction with St Giles'. To the north, Banbury Road meets the Oxford Ring Road at a roundabout. The road is designated the A4165. Prior to the building of the M40 motorway extension in 1990, the road formed part of the A423 from Maidenhead to Coventry.