Teodor Shteingel, (Штейнґель, Теодор; Štejngel'),(9 December 1870, Saint Petersburg - 11 April 1946 Dresden) was a Ukrainian archaeologist and nationalist politician.
After graduating from Kyiv University, he was active in Horodok, Rivne Oblast establishing various public bodies including a museum in 1902 where he deposited his archeological, historical, and ethnographic collections.
In 1906 he was elected as deputy for Kiev to the First State Duma where he joined the Ukrainian caucus.. He became a member of the Society of Ukrainian Progressionists and vice-president of the Ukrainian Scientific Society. Following February Revolution of 1917 he chaired the executive committee of the Kyiv City Duma, the forerunner of the Central Rada. In 1918 was sent as a diplomatic envoy to Berlin by the Ukrainian Hetmanate. He subsequently returned to Western Ukraine in the twenties but left for Germany in 1939.
Shteingel's palace is preserved as a cultural heritage site.