Natalija Konstantinovic (Serbian Cyrillic: ???????? ??????????????; 10 October 1882 – 21 August 1950) was a Princess of Montenegro as the wife of Prince Mirko Petrovic-Njegoš.
The couple had five sons; however, two died in early childhood.
They divorced in 1917, a year after the royal family was forced to flee the kingdom.
She was the granddaughter of Princess Anka Obrenovic of Serbia, of the House of Obrenovic.
Her husband was promised the Serbian crown in the event of King Alexander I dying childless; however, the crown went to Peter Karadordevic, following Alexander I of Serbia assassination in 1903.