World Cup finalists England will play Tonga at Twickenham in a November Test series that includes fixtures against New Zealand, Australia and Argentina.
It will be the first time England have played Tonga outside a Rugby World Cup.
England face New Zealand - who they beat in the World Cup semi-final - on 7 November, before hosting Argentina on 14 November.
The final game of the series is against England's World Cup quarter-final opponents Australia on 28 November.
England v New Zealand, Saturday, 7 November, 17:30 GMT
England v Argentina, Saturday, 14 November, 20:00 GMT
England v Tonga, Saturday, 21 November, 15:15 GMT
England v Australia, Saturday, 28 November, 15:15 GMT