The 2005 Critérium du Dauphiné Libéré was the 57th edition of the Critérium du Dauphiné Libéré cycle race and was held from 5 June to 12 June 2005.

The race started in Aix-les-Bains and finished in Sallanches.

The race was won by Spanish rider Íñigo Landaluze,[1] who has given positive in a doping test but whose case is still under dispute.

Twenty-one teams entered the race:[2][3]