| Kalmar Nation | |
| University: | Uppsala University |
| Location: | Svartmangatan 3 732 12 Uppsala |
| Name Latin: | Natio Calmariensis |
| Abbreviation: | N/A |
| Established: | 1663 |
| Head Label: | Inspektor |
| Head Link: | Inspektor |
| Head: | Maria Selmer |
| Membership: | approx 1300 |
Kalmar nation is one of the thirteen student nations (student society) at Uppsala university in Sweden. It is named for the city of Kalmar.
Kalmar nation was founded in 1663 when the old Smålands nation split into two; Kalmar representing eastern Småland and the island of Öland, and Wexiö nation representing the west of Småland.
Kalmar nation currently has around 1,700 members and is considered a somewhat 'alternative' nation, focusing on live music, providing for vegetarian and vegan diets, and regularly hosting a night clubs.