Faddéy Fyódorovich Shtéyngelʹ; 3 October 1762[1] – 7 March 1831[2]) was a Baltic German who served as a Russian military officer and the Governor-General of Finland between 1810 and 1824.

[3] His father's family was from region of Upper Rhine in Germany (where they had been burghers and officials of their hometowns); and his mother was from a cadet branch of the ancient Baltic House of Tiesenhausen, daughter of nobleman Frommhold Fabian Tiesenhausen,[4] lord of Orina in Estonia.

[6] In 1810 he was appointed as the Governor-General of Finland, to succeed Michael Andreas Barclay de Tolly.

In 1813 he took part in the war against Napoleon as the commander of an army in Courland and Livonia, and was succeeded as Governor-General by the influential Count Gustaf Mauritz Armfelt.

However, due to Armfelt's fragile health, Steinheil soon returned to the post of Governor-General which he held to 1823, being then succeeded by Count Arseniy Zakrevskiy.