| Official Name: | Zasavica |
| Settlement Type: | Village (Selo) |
| Image Caption: | Situated near the city of Šamac |
| Pushpin Map: | Bosnia |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of Zasavica in Bosnia and Herzegovina |
| Coordinates: | 45.0306°N 18.4206°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Entity |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Šamac |
| Elevation M: | 87 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Population As Of: | 1991 |
| Population Total: | 558 |
| Website: | www.zasavica.com |
Zasavica (Serbian: Засавица) is a small village in the municipality of Šamac. The Bosna River flows near the village.
| year | 1991 | 1981 | 1971 | |
|---|---|---|---|---|
| Croats | 524 (93.90%) | 506 (93.01%) | 512 (97.52%) | |
| Serbs | 6 (1.07%) | 5 (0.91%) | 8 (1.52%) | |
| Bosniaks | 5 (0.89%) | 0 | 0 | |
| Yugoslavs | 18 (3.22%) | 22 (4.04%) | 3 (0.57%) | |
| Other and unknown | 5 (0.89%) | 11 (2.02%) | 2 (0.38%) | |
| total | 558 | 544 | 525 |