| Tendu | |
| Other Name: | Tendruk |
| Native Name: | བསྟང་འབྲུག་ |
| Settlement Type: | Gewogs |
| Pushpin Map: | Bhutan Samtse |
| Pushpin Map Caption: | Tendu in the Samtse District of Bhutan |
| Pushpin Mapsize: | 300px |
| Coordinates: | 27.1223°N 88.8731°W |
| Mapsize: | 350px |
| Subdivision Type: | Country |
| Subdivision Name: |  Bhutan |
| Subdivision Type1: | District |
| Subdivision Name1: | Samtse District |
| Unit Pref: | Metric |
| Area Total Km2: | 132.52 |
| Population As Of: | 2012 |
| Population Total: | 6175 |
| Timezone: | BTT |
| Utc Offset: | +6 |
Tendu or Tendruk Gewog (Dzongkha: 1=བསྟང་འབྲུག་|translit=bstang 'brug) is a gewog (village block) of Samtse District, Bhutan.[1] The Tendruk Gewog comprises part of Sipsu Dungkhag (sub-district), together with Bara, Biru, Lehereni, and Sipsu Gewogs.
The Tendruk village is on a ridge near the confluence of the Bindu River with the Dichu (or Jaldhaka) River. The Indo-Bhutan border meets the Dichu near this point, with the west bank of Dichu being in India (Kalimpong district) and the east bank being in Bhutan. Thus, part of the Tendruk gewog lies on the border with India. A little below the confluence is the Bindu Dam over Dichu, which is said to be the second oldest dam in the Indian subcontinent. There is a border crossing to India over the dam.
The Tendruk Gewog occupies an area of .[2] It has 21 villages in 5 chiwogs. In 2012, it had a population of 6,175.[3]