Lennart Daléus (born 25 June 1946) is a Swedish politician, who was the leader of the Swedish Centre Party from 1998 to 2001.

[1] Born in Stockholm, Daléus was the leader of the Option 3 campaign for the 1980 referendum on nuclear power in Sweden.

[2] Following his stint as Centre Party leader, he was the general secretary of Greenpeace Sweden and the CEO of Greenpeace Scandinavia from 2002 until August 2008.

[2][3] In 2006 he disclosed that he was no longer a member of the Centre Party, as he did not believe that his work for Greenpeace was congruent with being active in a political party.

He also criticised the party for its decreased interest in environmental issues.