| Harnai District | |
| Native Name: | Urdu: {{nq|ضلع ہرنائی Pushto; Pashto: {{script/Arabic|هرناۍ ولسوالۍ |
| Settlement Type: | District of Balochistan |
| Coordinates: | 30.1054°N 67.9399°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Pakistan |
| Subdivision Type1: | Province |
| Subdivision Type2: | Division |
| Subdivision Name2: | Sibi |
| Seat Type: | Headquarters |
| Seat: | Harnai |
| Government Type: | District Administration |
| Leader Title: | Deputy Commissioner |
| Leader Name: | N/A |
| Leader Title1: | District Police Officer |
| Leader Name1: | N/A |
| Leader Title2: | District Health Officer |
| Leader Name2: | N/A |
| Unit Pref: | Metric |
| Area Total Km2: | 2492 |
| Population As Of: | 2023 |
| Population Total: | 127,571 |
| Population Density Km2: | auto |
| Timezone1: | PST |
| Utc Offset1: | +5 |
| Established Title: | Established |
| Blank Name Sec1: | District Council |
| Blank1 Name Sec1: | Number of Tehsils |
| Demographics1 Title1: | Main language(s) |
| Demographics1 Info1: | Pashto, Balochi |
Harnai (Pushto; Pashto: هرناۍ ولسوالۍ, Urdu: {{nq|ضلع ہرنائی) is a district in the northeastern part of the Balochistan province of Pakistan. Harnai is the principal town of this district and serves as its administrative headquarters.
Until 2007, Harnai had been a tehsil of Sibi District, in August, the Balochistan Government announced the Harnai district would be created by splitting the Sibi district and forming the new district from Harnai and Shahrag tehsils and the sub-tehsil of Khost.[1]
The name Harnai refers to an influential Hindu personality, Harnam Das, supposed founder of Harnai town, the capital of Harnai District. The town is quite close to Loralai, Ziarat, Sibi, and Quetta. Harnai is surrounded by imposing hills on all sides. The encircling hill ranges have the resounding names of 'Khalifat' and 'Zarghun'. Harnai proper has a population of about 200,000. The majority of the population of Harnai are Tareens and they mostly speak a unique dialect, or language, Tarino (Wanetsi), which is quite different from the Pushto spoken in other parts of Baluchistan and NWFP provinces, and is probably a mixture of Pushto, Urdu and other languages developed as a 'lingua franca' sometime during the 18th and 19th centuries, when a variety of people of different ethnic origins lived here. There seems to be no earlier historical record or trace of it.
Harnai is surrounded by mountainous ranges. The minimum and maximum winter temperature of the area is −2˚C to 20˚C. The summer is extreme in the area and the minimum and maximum temperature fall between 20˚C to 48˚C. Harnai has a fertile rainy season during monsoon time. In general, Harnai has pleasant weather in the winter season. Harnai is one of the most beautiful cities of the Balochistan Province with plenty of water available in the streams. It is the only area of the production of fresh vegetables and fruits with fresh and clean water in the whole of Balochistan.
At the time of the 2023 census the district had a population of 127,571.[2] At the time of the 2023 census, 89.24% of the population spoke Pashto, 8.2% Balochi and 0.7% Sindhi as their first language.