| Leonid Vilgelmovich Lesh | |
| Birth Date: | January 9, 1862 |
| Birth Place: | Smolensk Governorate, Russian Empire |
| Death Date: | August 28, 1934 |
| Death Place: | Dubrovnik, Kingdom of Yugoslavia |
| Allegiance: | White Movement |
| Branch: | Imperial Russian Army |
| Serviceyears: | 1881–1920 |
| Commands: | 1st Siberian Rifle Regiment 2nd Brigade, 23rd Infantry Division 2nd Guards Infantry Division 12th Army Corps 3rd Army |
| Battles: |
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Leonid Vilgelmovich Lesh (Russian: Леонид Вильгельмович Леш; 9 January 1862 – 28 August 1934) was an Imperial Russian Army commander. He served in the Boxer Rebellion, Russo Japanese War, and World War I.
Lesh took over command of the Third Army during the Gorlice–Tarnów offensive.[1]
After the October Revolution, he sided with the White movement during the Russian Civil War. With the defeat of the White movement, he evacuated from Odessa on 25 January 1920 and emigrated to Yugoslavia.[2] He died in Dubrovnik, Yugoslavia.