The UN Foundation has announced a five-year partnership with the Vodafone Group Foundation in a deal worth up to £15m.
The amount represents the largest financial and time commitment made by a corporation to the UN Foundation, which was established with a $1bn gift by CNN founder Ted Turner in 1998.
Under the agreement, the UN Foundation will add £1 for every £2 contributed by the mobile telecom company's charitable arm, which aims to raise £2m each year through its 60,000 employees.
Finances from the partnership's first year will support work to fight the HIV/Aids pandemic, and a £1m grant will go to the Measles Initiative to vaccinate 1.8 million children against the disease in sub-Saharan Africa this year.
It will also provide assistance to the Unesco World Heritage programme.
Some of these funds will be used to pilot a rapid-response unit that can deploy funding and technical assistance to those sites needing emergency repairs.
Arun Sarin, chief executive of the Vodafone Group, said: "Wherever possible, we want to provide more than money to this partnership and hope that some of our technical expertise will help."