Steinkjer is the administrative centre of the municipality of Steinkjer in Trøndelag county, Norway. The town is located at the northeastern end of the inner-most part of the Trondheimsfjorden, at the mouth of the river Steinkjerelva. In the eastern part of the town, the river of Figgja also flows into the fjord. The town is split in two by Steinkjerelva, creating the two traditional neighborhoods of Nordsia and Sørsia. Both the European route E6 highway and the Nordlandsbanen railway line run through the town, the latter serving the city at Steinkjer Station. Steinkjer Church and Egge Church are both located in the town.

Trøndelag (Urban East Norwegian: [ˈtrœ̂ndəˌlɑːɡ]; or Trööndelage  is a county and coextensive with the Trøndelag region in the central part of Norway. It was created in 1687, then named Trondhjem County ; in 1804 the county was split into Nord-Trøndelag and Sør-Trøndelag by the King of Denmark-Norway, and the counties were reunited in 2018 after a vote of the two counties in 2016.