Roman von Ungern-Sternberg, Austrian-Russian general (died 1921)

Nikolai Robert Maximilian Freiherr von Ungern-Sternberg, often referred to as Roman von Ungern-Sternberg or Baron Ungern, was a Russian military leader in the Russian Civil War and then an independent warlord who intervened in Mongolia against China.

December 29 is the 363rd day of the year in the Gregorian calendar; two days remain until the end of the year.