| Official Name: | Rječica Donja |
| Native Name: | Рјечица Доња |
| Settlement Type: | Village |
| Pushpin Map: | Bosnia |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Bosnia and Herzegovina |
| Subdivision Type1: | Entity |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Doboj |
| Unit Pref: | Metric |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 44.5967°N 18.0992°W |
Rječica Donja (Serbian: Рјечица Доња) is a village in the municipality of Doboj, Republika Srpska, Bosnia and Herzegovina.[1]