| Haji | |
| States: | Indonesia |
| Region: | Sumatra |
| Date: | 2000 census |
| Ref: | e18 |
| Familycolor: | Austronesian |
| Fam2: | Malayo-Polynesian |
| Fam3: | (disputed) |
| Fam4: | Malayic |
| Iso3: | hji |
| Glotto: | haji1235 |
| Glottorefname: | Haji |
Haji (Aji) is a Malayic language spoken on the island of Sumatra in Indonesia. A third of the vocabulary is derived from Lampung.