| Official Name: | Donji Kašić |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Map Caption: | Location of Donji Kašić in Croatia |
| Pushpin Label Position: | bottom |
| Coordinates: | 44.1511°N 15.4731°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Croatia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Adriatic Croatia |
| Subdivision Type2: | County |
| Subdivision Name2: | Zadar |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Benkovac |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 8.5 |
| Elevation M: | 199 |
| Population As Of: | 2021 |
| Population Total: | 69 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 23 420 Benkovac |
| Area Code: | (+385) 23 |
Donji Kašić is a village in Croatia, in the municipality/town of Benkovac, Zadar County.
According to the 2011 census, the village of Donji Kašić has 63 inhabitants. This represents 8.24% of its pre-war population according to the 1991 census.
The 1991 census[2] recorded that 98.96% of the village population were ethnic Serbs (757/765), 0.26% were Yugoslavs (2/765), 0.26% were ethnic Croats (2/765), and 0.52% were of other ethnic origin (4/765).