1961
Dag Hammarskjöld
for developing the UN into an effective and constructive international organization, capable of giving life to the principles and aims expressed in the UN Charter
![Dag Hammarskjöld Dag Hammarskjöld](https://www.nobelpeaceprize.org/getfile.php/132467-1629706078/_Laureates/Individual%20portraits%20_%20logos/1961_Hammarskj%C3%B6ld.jpg%20%28thumbnail%29.jpg)
Dag Hammarskjöld (1905 - 1961)
Sweden