| En Name: | Lagan |
| Ru Name: | Лагань |
| Loc Name1: | Лагань |
| Loc Lang1: | Kalmyk |
| Coordinates: | 45.3908°N 47.3658°W |
| Map Label Position: | left |
| Image Coa: | Lagan.gif |
| Federal Subject: | Republic of Kalmykia |
| Adm District Jur: | Lagansky District |
| Adm Selsoviet Jur: | Lagan |
| Adm Selsoviet Type: | Town |
| Adm Ctr Of1: | Lagansky District |
| Adm Ctr Of2: | Town of Lagan |
| Inhabloc Cat: | Town |
| Mun District Jur: | Lagansky Municipal District |
| Urban Settlement Jur: | Laganskoye Urban Settlement |
| Mun Admctr Of1: | Lagansky Municipal District |
| Mun Admctr Of2: | Laganskoye Urban Settlement |
| Area Km2: | 91.38 |
| Pop 2010Census: | 14323 |
| Established Date: | 1870 |
| Current Cat Date: | 1963 |
Lagan (Russian: Лага́нь, pronounced as /ru/; Kalmyk; Oirat: Лагань, Lagaň, pronounced as /lɑˈgɑnʲ/) is a town and the administrative center of Lagansky District in the Republic of Kalmykia, Russia, located a few kilometers from the Caspian Sea. Population: In terms of population, it is the second biggest settlement in the republic after the capital Elista.
Lagan was founded in 1870. Town status was granted to it in 1963. In the Soviet period, from 1944 to 1991, it was known as Kaspiysky (Russian: Каспи́йский). Lagan was occupied by the Germans during August–December 1942.
Within the framework of administrative divisions, Lagan serves as the administrative center of Lagansky District.[1] As an administrative division, it is incorporated within Lagansky District as the Town of Lagan. As a municipal division, the Town of Lagan is incorporated within Lagansky Municipal District as Laganskoye Urban Settlement.[2]
Most of the population in Lagan are Buddhists. There is a Buddhist temple in the town, known as Dardeling Temple.