| Native Name Lang: | Pahari, hindi, english |
| Settlement Type: | shillai |
| Nickname: | Shillai Dhar |
| Subdivision Type: | Country |
| Subdivision Name: | India |
| Subdivision Type1: | State |
| Subdivision Name1: | Himachal Pradesh |
| Subdivision Type2: | District |
| Subdivision Name2: | Sirmaur |
| Subdivision Type3: | Tehsil |
| Subdivision Name3: | Shillai |
| Unit Pref: | Metric |
| Elevation Footnotes: | meter |
| Elevation M: | 1700 |
| Population Density Km2: | auto |
| Postal Code Type: | Pin Code |
| Postal Code: | 173027 |
| Area Code: | 01704 |
Shillai is a town in the Sirmaur District of Himachal Pradesh in Northern India. Shillai is located on a south east-facing hill at an elevation of 1,900 metres. The hill is called shillai dhar, and is 2,100 meters high.
Shillai is located on the ridge of a mountain at an altitude of 1900 m. The average temperature ranges from 20° to 30 °C in summer and -1° to 20° in winter. Shillai has a temperate climate, in summer the maximum temperature ranges from 24 to 28 degrees Celsius, whereas, in winter, it snows sometimes.
Shillai is divided into two regions: the Village Shillai (lower part) and the Shillai town (upper part). There is a greenbelt of a forest all around and inside the village, which is connected with the town by road as well as pedestrian roads.