| Official Name: | Abja-Paluoja |
| Pushpin Map: | Estonia#Europe |
| Mapsize: | 200px |
| Subdivision Type: | Country |
| Subdivision Name: | Estonia |
| Subdivision Type1: | County |
| Subdivision Name1: | Viljandi County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Mulgi Parish |
| Established Title: | Town status |
| Established Date: | 1993 |
| Population Footnotes: | [1] |
| Population As Of: | 2018 |
| Population Total: | 1057 |
| Population Rank: | 44th |
| Timezone: | EET |
| Utc Offset: | +2 |
| Coordinates: | 58.1258°N 25.3586°W |
Abja-Paluoja is a town in Mulgi Parish, Viljandi County, in southern Estonia. Before 2017, it was the administrative centre of Abja Parish.
Abja-Paluoja was first mentioned in 1505. Abja-Paluoja gained town rights in 1993 and became a sovereign municipality but in 1998 it was merged into surrounding rural municipality Abja Parish.
From 1897 to 1973, the railway line passed through Abja-Paluoja, and there was a railway station in the town.
In 1913, a flax factory was established near Abja-Paluoja because flax cultivation had developed in the area.
Since 1940, the Abja Gymnasium has offered secondary education. The kindergarten in Abja-Paluoja was founded in 1912.
Abja-Paluoja was the centre of Abja raion from 1950 to 1962.