There were nearly 10,000 terrorist attacks in 2013, a 44% increase from the previous year, the Global Terrorism Index 2014 report added.
The report said militant groups Islamic State, al-Qaeda, Boko Haram and the Taliban were behind most of the deaths.
Iraq was the country most affected by terrorism, the report said.
The report by the Institute for Economics and Peace says that nearly 18,000 people died from terrorist attacks in 2013.
“Not only is the intensity of terrorism increasing, its breadth is increasing as well,” it notes.