François Lachat is a Swiss politician of the canton of the Jura. It was born with Bonfol the August 2nd 1942 and he is member of the Parti Christian-Democrat of which he was vice-president on the Swiss level.

Bachelor in letters and right of the University of Freiburg. He is appointed with the Grand the Council Bernese of 1970 to 1976.

President of the Constituent of 1976 to 1979, it announces the result of the popular voting on the creation of the canton of the Jura the September 24th 1978 top of the balcony of the Hotel-of-City of Delémont. he was minister in the first government of the canton of the Jura, person in charge of the department of the co-operation, finances and the police force of 1979 to 1995. Appointed with the National council of 1995 to 2003, he is president of the Commission of foreign policy and president of the Swiss delegation near the parliamentary Assemblée of the Council of Europe as well as delegation with the interparliamentary Union. He is not re-elected in 2003. He chairs the collective agreement of the hotel branch.