Emilio Kosterlitzky
| Emilio Kosterlitzky | |
|---|---|
| Kosterlitzky in full military uniform, 1912 | |
| Native name | Эмилио Иван Костерлицкий | 
| Nickname(s) | Eagle of Sonora Mexican Cossack | 
| Born | 16 November 1853 Moscow, Russian Empire | 
| Died | 2 March 1928 (aged 74) Los Angeles, California, U.S. | 
| Buried | |
| Allegiance | Russia Mexico | 
| Branch | Imperial Russian Navy Mexican Army | 
| Years of service | 1871–1914 | 
| Rank | Midshipman Colonel | 
| Commands | Rurales Federal Army | 
| Battles / wars | |
| Spouse(s) | Francisca López | 
| Children | 2 | 
| Other work | Spy | 
Emilio Ivan Kosterlitzky (Russian: Эмилио Иван Костерлицкий, romanized: Emilio Ivan Kosterlitskiy; 16 November 1853 – 2 March 1928) was a Russian-born Mexican colonel during the Mexican Revolution. He had also served in the Mexican Apache Wars and Yaqui Wars. He is most noted for being the commander of the Mexican Rurales, or border police, during the late 19th century.