Oxfordshire (/ˈɒksfərdʃər/ or /ˈɒksfərdʃɪər/; abbreviated Oxon) is a county in South East England bordering on Warwickshire (to the north/north-west), Northamptonshire (to the north/north-east), Buckinghamshire (to the east), Berkshire (to the south), Wiltshire (to the south-west) and Gloucestershire (to the west).