Mr Corbyn saw off the challenge for the party’s top position from frontbenchers Andy Burnham, Yvette Cooper and Liz Kendall, by taking a massive 59.5 per cent of the toatal vote.
His nearest rival, Mr Burnham, got 19 per cent.
Ms Cooper was third on 17 per cent and Ms Kendall fourth with 4.5 per cent of the vote.
A total of 422,664 people cast a vote - a turnout of 76 per cent. Former minister and Gordon Brown ally Tom Watson was elected deputy leader.
The left winger, who has spent his entire 32 year career in the Commons on the backbenches, promised to fight for a more tolerant and inclusive Britain - and to tackle “grotesque levels of inequality in our society”.