Set up by the Swedish-German stamp collector and philanthropist Jacob von Oexkull in 1980, the prize this year, the awarding committee says, is intended to honor the power of change from the grassroots.
Environmental activist Nnimmo Bassey from Nigeria has been given the prize in recognition of his work in revealing the consequences of oil exploitation in the western African nation.
Bishop Erwin Kräutler, originally from Austria, but now living in Brazil, receives the award for a lifetime of work for the human and environmental rights of indigenous peoples and for his tireless efforts to save the Amazon rainforest from destruction.
Shrikrishna Upadhyay from the SAPPROS organisation in Nepal is being honored for demonstrating over many years the power of community mobilisation to address the multiple causes of poverty even when threatened by political violence and instability.
The last of the four winners, is the Israeli organisation "Physicians for Human Rights Israel", recognised for what the committee says is its "indomitable spirit in working for the right to health for all people in Israel and Palestine."
The prize will be awarded here in Stockholm on December 6th.