| Conventional Long Name: | Department of Léman |
| Common Name: | Léman |
| Year Start: | 1798 |
| Year End: | 1813 |
| Flag: | Flag of France |
| Image Map Caption: | Léman and other departments |
| Official Languages: | French |
| Status: | Department of the French First Republic and the French First Empire |
| Admin Center Type: | Chef-lieu |
| Admin Center: | Geneva 46.2°N 6.15°W |
| Stat Year1: | 1804 |
| Stat Area1: | 2800 |
| Ref Area1: | [1] |
| Stat Pop1: | 215,884 |
| Ref Pop1: | [2] |
| Stat Year2: | 1812 |
| Stat Pop2: | 210,478 |
| Era: | French Revolutionary Wars |
| Event Start: | Annexation of the Republic of Geneva |
| Date Start: | 13 December |
| Event End: | Genevian restoration |
| Date End: | 31 December |
| P1: | Republic of Geneva |
| Flag P1: | Ancien_drapeau_Genève_(1792-1798).svg |
| S1: | Restoration and Regeneration in Switzerland |
| Flag S1: | Swiss_flag_Bachmann_1815.png |
| Today: |
Léman (pronounced as /fr/) was a department of the French First Republic and French First Empire. Its name came from the French name of Lake Geneva, Lac Léman. It was formed in 1798, when the Republic of Geneva was annexed by the French Republic. Léman also included districts that were previously part of the departments of Mont-Blanc (northern Savoy) and Ain (around Gex). Its territory corresponded with the present Swiss canton of Geneva and parts of the present French departments of Ain and Haute-Savoie.
The Chef-lieu of the department was Genève. The department was subdivided into the following three arrondissements and cantons:
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After the final defeat of Napoleon in 1815, the former Republic of Geneva became a Swiss canton, and Savoy was returned to the Kingdom of Sardinia. The area around Gex returned to the department of Ain.
The Prefect was the highest state representative in the department.
| Term start | Term end | Office holder | |
|---|---|---|---|
| 2 March 1800[3] | 10 December 1802 | Ange Marie d'Eymar | |
| 10 December 1802[4] | 30 November 1810 | Claude Ignace Brugière de Barante | |
| 30 November 1810[5] | 5 January 1814 | Guillaume Antoine Benoît Capelle | |
| 5 January 1814[6] | Not installed | Louis Toussaint de La Moussaye |
The Secretary-General was the deputy to the Prefect.
| Term start | Term end | Office holder | |
|---|---|---|---|
| 2 March 1800 | ?? ?? 1802 | Cornuaud | |
| ?? ?? 1803 | ?? ?? 1811 | Étienne Charles Garnier | |
| ?? ?? 1811 | 31 December 1813 | J.J. Councler |
| Term start | Term end | Office holder | |
|---|---|---|---|
| 1 August 1800[7] | 12 June 1811 | Joseph Marie Gavard | |
| 12 June 1811 | 31 December 1813 | Gavard Fils | |
| 26 December 1811 | 31 December 1813 | Jean Baptiste Rogniat |
The office of Subprefect of Genève was held by the Prefect until 1811.
| Term start | Term end | Office holder | |
|---|---|---|---|
| 14 January 1811 | 7 May 1812 | Bouthillier de Beaumont | |
| 7 May 1812 | 31 December 1813 | Jean Baptiste Bourgeois de Jessaint |
| Term start | Term end | Office holder | |
|---|---|---|---|
| 5 April 1800 | 1 October 1804 | François Plagnat | |
| 1 October 1804 | 31 December 1813 | Joseph Jérôme Milliet |