General Milivoje Petrovic Blaznavac (Blaznava, 16 May 1824 – Belgrade, 5 April 1873) was Serbian soldier and politician.
His father, Petar, was a rural merchant and shopkeeper from Blaznava, although a story circulated that he was an illegitimate son of Prince Miloš Obrenovic and a lady of Miloš's household, whom Miloš married off to one of his guards retired as a village storekeeper, before the birth of Blaznavac in 1824.