Ivan Knežević (revolutionary)

Ivan Knežević (Serbian Cyrillic: Иван Кнежевић) (Popovi, Bijeljina, 1760 - Šabac, 29 June 1840) better known to the people as Knez Ivo of Semberija was a Serb voivode and duke over all the villages of the then Bijeljina Nahia, who most notably participated in the First Serbian Uprising.

Knyaz Ivo was born in Popovi near Bijeljina. Besides Filip Višnjić, he is one of the most important Serbian historical figures born in Semberija and as such his likeness appears on the coat of arms of the municipality of Bijeljina.