Through its Bright Future campaign, which aims to encourage consumers to act more sustainably and improve Unilever’s social impact, it has partnered with the two mass movements.
The partnerships will include supporting Live Earth through a series of global events on 18 June, encouraging consumers to sign the "Take Climate Action Now" pledge and help Global Citizen to build a "social activism campaign".
Paul Polman, CEO, Unilever said: "As a business we can deploy our resources, expertise and scale to help our consumers to take action. We are adding our support for the growing movement of citizens and businesses demanding change."
Keith Weed, CMO, added: "Our partnerships with Live Earth: Road to Paris and Global Citizen reflect our commitment to help tackle social and environmental issues wherever we do business.
"To us, climate and development issues are intertwined. Unilever reaches two billion consumers every day through our brands which gives us a real opportunity to encourage action, empowering people to be part of the positive change they wish to see."