E. U. Curtis "Buff" Bohlen (born September 29, 1927) was the president of the World Wildlife Fund from 1981 to 1990, and United States Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs from 1990 to 1992.
There, he served in Washington, D.C. as political analyst for east African affairs; second secretary and political officer for the United States Embassy in Cairo; desk officer for Afghanistan affairs; and economic officer at the U.S. Embassy in Kabul.
In 1977–78, he was a consultant to the Committee on Merchant Marine and Fisheries of the United States House of Representatives.
In February 1990, President of the United States George H. W. Bush nominated Bohlen to be Assistant Secretary of State for Oceans and International Environmental and Scientific Affairs; after Senate confirmation, he held this office from June 1990 until October 1992.
He played a role in the negotiations of that led to Greenland agreeing to close its commercial fishery in 2002.