| Official Name: | Mačvanska Mitrovica |
| Settlement Type: | Town |
| Pushpin Map: | Serbia Vojvodina#Serbia#Europe |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Serbia |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Mačva |
| Subdivision Type3: | District |
| Subdivision Name3: | Srem |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Sremska Mitrovica |
| Area Total Km2: | 2.4 |
| Population As Of: | 2002 |
| Population Total: | 3,873 |
| Population Density Km2: | 1623 |
| Coordinates: | 44.9656°N 19.5981°W |
| Elevation M: | 76 |
| Postal Code: | 22202 |
| Area Code: | + 381(0)22 |
Mačvanska Mitrovica (Serbian Cyrillic: Мачванска Митровица, pronounced as /mât͡ʃv̞anskaː mîtrɔv̞it͡sa/) is a town located in the Sremska Mitrovica municipality, in the Srem District of Serbia. It is situated in the Autonomous Province of Vojvodina. The town has a Serb ethnic majority and its population numbering 3,873 people (2011 census).[1]
Its name means "Mitrovica of Mačva" (Mitrovica of Srem and Mitrovica of Kosovo also exist). In Serbian, the town is known as Mačvanska Mitrovica (Мачванска Митровица), in Croatian as Mačvanska Mitrovica, and in Hungarian as Szenternye. Other Serbian names used for the town include Srpska Mitrovica (Српска Митровица), Mala Mitrovica (Мала Митровица), and Mitrovica (Митровица).
Together with the neighbouring villages of Noćaj, Salaš Noćajski, Radenković, Ravnje and Zasavica II, the town of Mačvanska Mitrovica is the only town in Vojvodina located in the Mačva region, i.e. on the right bank of the river Sava, and thus on the Balkan Peninsula.
Ethnic groups (2002 census):