| Marijampolė Municipality | |
| Native Name: | Marijampolės savivaldybė |
| Native Name Lang: | lt |
| Settlement Type: | Municipality |
| Image Map1: | MarijampolesSen.png |
| Map Caption1: | Map of Elderships in Marijampolė municipality |
| Subdivision Type: | Country |
| Subdivision Name: |  Lithuania |
| Subdivision Type1: | Ethnographic region |
| Subdivision Name1: | Suvalkija |
| Subdivision Type2: | County |
| Subdivision Name2: | Marijampolė County |
| Parts Style: | para |
| Parts Type: | Elderships |
| P1: | 6 |
| Seat Type: | Capital |
| Seat: | Marijampolė |
| Unit Pref: | Metric |
| Area Total Km2: | 755 |
| Area Rank: | 44th |
| Population Total: | 54,846 |
| Population As Of: | 2021[1] |
| Population Rank: | 9th |
| Population Density Km2: | auto |
| Population Density Rank: | 9th |
| Timezone1: | EET |
| Utc Offset1: | +2 |
| Timezone1 Dst: | EEST |
| Utc Offset1 Dst: | +3 |
| Area Code Type: | Telephone code |
| Area Code: | 343 |
| Image Blank Emblem: | Marijampolė logo.png |
| Blank Emblem Type: | Brandmark |
| Blank Emblem Size: | 120px |
| Blank Name Sec1: | Major settlements |
Marijampolė Municipality (Lithuanian: Marijampolės savivaldybė) is a municipality in Marijampolė County, south-western Lithuania. Its administrative seat and largest town is Marijampolė.
It borders Lazdijai District Municipality and Alytus District Municipality to the south-east, Prienai District Municipality to the east, Vilkaviškis District Municipality to the west, Kazlų Rūda Municipality to the north and Kalvarija Municipality to the south.
Marijampolė Municipality was established in 2000 after the territorial administrative reform, which abolished the Marijampolė District Municipality.
Marijampolė has a City Council with 27 members. The members of the City Council represent different Lithuanian political parties.
The town of Marijampolė and its 6 surrounding elderships make up the territory of Marijampolė Municipality. They are: Gudeliai, Igliauka, Liudvinavas, Marijampolė, Sasnava, and Šunskai communities. Marijampolė Municipality covers 755km² of land; 72% of which is an agricultural area, 12.3% is covered by forests; 4.2% - towns and villages, 2% - industrial enterprises and roads, and 6.9% - area used for other purposes.