Theog is a town and a municipal committee as well as a tehsil in Shimla district in the Indian state of Himachal Pradesh. It is 30 km from state capital Shimla and 37 km from ISBT Shimla. First settlements were in 1902.

As of 2011 India census, Theog had a population of 84684. Males constitute 51% of the population and females 49%. Theog has an average literacy rate of 75%; male literacy is 80.7%, and female literacy is 69.4%. In Theog, 10.6% of the population is under 6 years of age. According to the census of 1931, the total population of Theog state was 6912; there were 6800 Hindus, 91 Muslims and 21 Sikhs in Theog State in 1931.

The Chandel rulers of Theog share a common line of descent with the founders of Ghund clan and Dharampur Madhan, clan who were all together sons of a Chandel Rajput of Jaipur. The state was made subordinate to Keonthal Estate by a sanad of September 1815.

Theog was Ziladari of CHANDEL Clan

Theog is located at 31°07′N 77°21′E / 31.12°N 77.35°E / 31.12; 77.35. It has an average elevation of 1965 metres (6446 feet). It is situated on National Highway NH22 (on the Hindustan-Tibet Road), is 32 km away from Shimla, and is a town of five 'Ghats' (or ridges): Rahi Ghat, Deori Ghat, Prem Ghat, Janoghat, and Bagaghat.

Numerous villages come under the jurisdiction of Theog. Diksha is the new sarpanch from Sarog Gali village

• Jaiee

Theog is well connected to Himachal and rest of India through National Highway 5 and National Highway 705. Theog is 45 km from Shimla airport and 32 km from Shimla railway station.

• Theog-Kumarsain (Vidhan Sabha constituency)

• Theog on Google Maps