Karl Paul von Quosdanovich (Croatian: Karlo Pavao Gvozdanović, in some sources also Quasdanovich or Guosdanovich; 1763 – 5 February 1817) was a Croatian nobleman and general in the Habsburg monarchy imperial army service.was a Habsburg nobleman and general.

He achieved the rank of major general and was awarded the Knight's Cross of the Military Order of Maria Theresa in 1801 and the Commander's Cross of the same order of merit in 1814.

Baron Karl Paul von Quosdanovich was born in Brezovac Žumberački near Samobor (at the time in the Kingdom of Croatia within Habsburg Monarchy), which is in Žumberak, a range of mountains between Croatia and Slovenia, known for his uskoks, the refugees from parts of Croatia occupied by the Ottoman Empire and traditional guerrilla soldiers.

The Gvozdanović family surname dates back to Raška and Zeta in the Middle Ages.

Quosdanovich died at the beginning of 1817 in Pančevo, a town in Banat Military Frontier of the Habsburg monarchy (now Serbia), at the age of 53.