| Sięciaszka Trzecia | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Lublin |
| Subdivision Type2: | County |
| Subdivision Name2: | Łuków |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Łuków |
| Coordinates: | 51.9047°N 22.2783°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Population Total: | 57 |
Sięciaszka Trzecia is a village in the administrative district of Gmina Łuków, within Łuków County, Lublin Voivodeship, in eastern Poland. It lies approximately 8km (05miles) west of Łuków and 760NaN0 north of the regional capital Lublin.[1]