Hallen is a village in South Gloucestershire, England, just north of the Bristol city boundary. It is southwest of Easter Compton, northeast of Avonmouth and northwest of Henbury. The village lies at the edge of the Severn floodplain, sandwiched between the M49 and M5 motorways. The word Hallen is old Saxon meaning the village or place of salt or is from the Welsh for salt, 'halen'.