| Ngadjuri | |
| Region: | South Australia |
| Ethnicity: | Ngadjuri people |
| Extinct: | ? |
| Familycolor: | Australian |
| Fam1: | Pama–Nyungan |
| Fam2: | Thura-Yura |
| Fam3: | (unclassified) |
| Iso3: | jui |
| Aiatsis: | L5 |
| Glotto: | ngad1257 |
| Glottorefname: | Ngadjuri |
Ngadjuri is an extinct Australian Aboriginal language formerly spoken by the Ngadjuri people of South Australia, whose traditional lands covered roughly 11500mi2, embracing Angaston and Freeling in the south and running northwards to Clare, Crystal Brook, Gladstone up to Carrieton and Orroroo in the Flinders Ranges.