The workers and their union Unison worked with community alliance London Citizens to push for the LLW for contractors, bringing them in line with in-house employees' wages.
Subcontractors will now have to pay the LLW when their contracts with the university are renewed.
Unison leader Dave Prentis said: "It is a huge boost for staff at the University of East London to win the London living wage.
"Building alliances is the key to pushing for fairness at work and our strong links with London Citizens have made this possible.
"We are pleased that the vice-chancellor has recognised that it is the right thing to do and we will continue to fight for more organisations to take up the living wage - everyone deserves a fair rate of pay for a hard day's work."
The LLW is currently £7.85 per hour and is set annually by the Greater London Authority.