| Kaunas Maironis Academic Gymnasium | |
| Native Name: | Kauno Maironio universitetinė gimnazija |
| Status: | Currently used as Kaunas Maironis Academic Gymnasium |
| Architectural Style: | 19th century historicism, 20th century modernism |
| Location: | Kaunas, Lithuania |
| Address: | Gimnazijos st. 3 |
| Building Type: | School |
| Coordinates: | 54.8972°N 23.8956°W |
| Floor Count: | 3 |
| Inauguration Date: | 1862 |
| Architect: | Nikolay Chagin |
| Website: | www.kmug.lt |
Kaunas Maironis Academic Gymnasium (lt|Kauno Maironio universitetinė gimnazija), previously the Constituent Assembly Palace (lt|Steigiamojo Seimo rūmai), is an historical building in Kaunas, Lithuania. The building was completed in 1862 and in 1863 the gymnasium was moved into it, but the building gained its greatest significance between 1920 and 1927 when the Constituent Assembly of Lithuania met there, as well as the interwar Seimas for its first three electoral periods. The Seimas was later moved to the newly built Palace of Justice and the Seimas.[1] [2] [3] [4]
The Kaunas Maironis Academic Gymnasium is the oldest operational school in Kaunas and celebrated its 150th anniversary in 2023.[5] [6]