The First Otmar Hasler cabinet was the governing body of Liechtenstein from 5 April 2001 to 21 April 2005. It was appointed by Hans-Adam II and was chaired by Otmar Hasler.
During the government's term, a referendum to adopt Hans-Adam's revision of the Constitution of Liechtenstein to expand his powers passed in 2003. The prince had threatened to abdicate and leave the country if the referendum did not result in his favour.[3] In the run-up to the referendum, the government supported the proposed changes.[4]