Ari Trausti Guðmundsson (born 3 December 1948) is an Icelandic geologist, author, documentarian, broadcaster, journalist, lecturer, mountaineer and explorer.
He worked as teacher, consultant and lecturer on: earth science, environmental and tourism issues.
He served as a mountain guide, TV- weather reporter, media presenter and producer and has planned nature and science exhibitions in Iceland, Paris and London and authored non-fiction books, fiction and poetry.
He was a presidential candidate in 2012 and presently he is a member of Icelandic Parliament.