| Biru County | |
| Other Name: | Diru, Driru, Biru |
| Settlement Type: | County |
| Pushpin Map: | Tibet#China |
| Pushpin Label: | Biru |
| Pushpin Map Caption: | Location of the seat in Tibet Autonomous Region |
| Subdivision Type: | Country |
| Subdivision Name: | China |
| Subdivision Type1: | Autonomous region |
| Subdivision Name1: | Tibet |
| Subdivision Type2: | Prefecture-level city |
| Subdivision Name2: | Nagqu |
| Seat Type: | County seat |
| Seat: | Biru |
| Area Total Km2: | 11,683.45 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 72618 |
| Population Density Km2: | auto |
| Timezone: | China Standard |
| Utc Offset: | +8 |
| Coordinates: | 31.7775°N 93.55°W |
| Tib: | འབྲི་རུ་རྫོང་། |
| Wylie: | 'bri ru rdzong |
| Zwpy: | Biru Zong |
| Order: | st |
| S: | 比如县 |
| T: | 比如縣 |
| P: | Bǐrú Xiàn |
| J: | bei2jyu4 jyun2 |
Biru County (;) is the most populated county within Nagqu of the Tibet Autonomous Region, China. The name means "female yak". Either of the following pronunciations can be considered correct in Standard Tibetan: [bìru] ~ [pìru] (conventionally written Biru in English) or [ɖìru] ~ [ʈìru] (conventionally Driru).
Biru lies in the southwest part of the former province of Kham. To its east is Chamdo and to its west Nagchu. Biru is located on the Gyalmo Ngulchu River (upper part of Salween River). Diru is bordered by Sog County to the northwest and the extreme east of Banbar County་, is also surrounded by Lhari County to the south, and extreme north to the Nagchu county.
Sepu Kangri is located in the county.
Biru county contains the following 2 towns and 8 townships:
| Name | Chinese | Hanyu Pinyin | Tibetan | Wylie |
|---|---|---|---|---|
| Towns | ||||
| Biru Town | Chinese: 比如镇 | |||
| Shachu Town | Chinese: 夏曲镇 | |||
| Townships | ||||
| Benkar Township | Chinese: 白嘎乡 | |||
| Latang Township (Dawatang) | Chinese: 达塘乡 | |||
| Qagzê Township | Chinese: 恰则乡 | |||
| Zala Township | Chinese: 扎拉乡 | |||
| Yangshok Township | Chinese: 羊秀乡 | |||
| Shamchu Township | Chinese: 香曲乡 | |||
| Lenchu Township | Chinese: 良曲乡 | |||
| Tsachu Township | Chinese: 茶曲乡 | |||
At the 2009 PRC census, the county's population was 60,179, of whom:
| Name of group | Number | Percentage | |
|---|---|---|---|
| Tibetans | 59,824 | 99.21% | |
| Han | 313 | 0.69% | |
| Bai | 11 | 0.02% | |
| Uyghurs | 9 | 0.02% | |
| Others | 22 | 0.05% |