Aleksandar "Aco" Đukanović (Serbian Cyrillic: Александap "Ацо" Ђукановић; born in 1965) is a controversial Montenegrin businessman, widely considered to be one of the richest and most powerful individuals in the country, along with . , and others from the Montenegrin nouveau riche class that emerged during the 1990s following the break-up of SFR Yugoslavia. All of Aco Đukanović's wealth and influence were achieved during his older brother Milo Đukanović's rule in Montenegro as Prime Minister and President of the Republic (1991–2006) and currently as the ruling political party's (DPS) president and prime minister again (2006–present).