There are over a 100 terrorist organizations in the world. The most popular ones are.
1. The Islamic State of Iraq and the Levant
2. Boko Haram
5. Fuerzas Armadas Revolucionarias de Colombia (FARC)
7. Al Qaeda
10. Al Shabaab
11. Haqqani Network
There are 100 to 170 officially designated terrorist organizations throughout the world. A few examples of this include Al-Shahaab, Muslim Brotherhood, Irish National Liberation Army, and Islamic Jihad. Many organizations deny using terrorism as a military tactic to achieve their objectives, and there is no international agreement on the legal definition of terrorism.
Some organizations have multiple wings or components, one or more of which may be designated as a terrorist while others are not. The actual definition of a terrorist organization is a political movement that uses terror as a weapon to achieve its goals.