Rounding out the top 10 are Saudi Arabia, Afghanistan, Iraq, Somalia, Maldives, Mali, Iran, Yemen and Eritrea.
The on-going civil war, that has displaced hundreds of thousands of people, has landed Syria just one slot outside the top 10 at number 11. Two places behind at 13 is Nigeria, which has seen increasing violence towards Christians in the Muslim north of the country.
Meanwhile, the only country on the list outside of Africa or Asia is Colombia, at number 46, due to guerrilla violence against priests and Christians. Overall, Asia had the most countries on the list with 31, while Africa has 18, and South America has one.