| Official Name: | Zasavica II |
| Settlement Type: | Village (Selo) |
| Pushpin Map: | Serbia Vojvodina#Serbia#Europe |
| Pushpin Label Position: | bottom |
| 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 |
| Unit Pref: | Imperial |
| Population As Of: | 2011 |
| Population Total: | 608 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 44.9667°N 51°W |
Zasavica II (Serbian: Засавица II), also known as Donja Zasavica (Serbian: Доња Засавица), is a village in the Sremska Mitrovica municipality, in the Vojvodina province of Serbia. The village has a Serb ethnic majority and its population numbering 608 people (2011 census). Although part of the Srem District, Zasavica II is situated in the region of Mačva south of the Sava river. With the adjacent village of Zasavica I (Gornja Zasavica), it still forms a single cadastral unit, although they are treated as separate villages for census purposes.