Ljubomir Vulović, known by his nickname Ljuba, was an artillery major in the Serbian Army, conspirator of the May Coup, and member of the Black Hand.

Ljubomir S. Jovanović, known as Ljuba Čupa, was a Serbian guerrilla fighter, member of the Black Hand, soldier in the Balkan Wars, and journalist. He advocated for a united state of South Slavs under