General Mikhail Nikolayevich Annenkov (Russian: Михаил Николаевич Анненков; formerly also transcribed Michael Nicolaivitch Annenkoff) (1835 in St. Petersburg, Russia – January 22, 1899 in St. Petersburg, Russia) was a Russian nobleman, author, military officer, and renowned engineer. An important figure in the history of the Russian conquest of Turkestan in the 19th Century, he was Governor-General of the Transcaspian Region (today's Turkmenistan).
General Annenkov was the builder of the strategic Transcaspian Railway in its initial stages through what is now Turkmenistan, which made possible the bloody defeat of the Turkmen at Geok-Tepe in 1881. He was also involved in the planning of the Trans-Siberian railroad, which was under construction at the time of his death.
He also played a major role in the Pendjeh Crisis of 1885, when the UK and Russia nearly went to war.
Born into the wealthy Annenkoff family, son of General Nicholas Annenkov, Governor of Odessa and the southwestern provinces and aide-de-camp to the Emperor, Michael studied at the Corps des Pages and was appointed general adjutant to the general staff of the Imperial Army at St. Petersburg. From 1864-1866, during the Polish uprising, Michael earned a reputation as a competent commander and military tactician: by age 27 he had been made a Colonel of the Imperial Army and appointed Aide-de-Camp to Emperor Alexander III of Russia.