The Libyan Islamic Fighting Group (LIFG), also known as Al-Jama'a al-Islamiyyah al-Muqatilah bi-Libya (Arabic: الجماعة الإسلامية المقاتلة بليبيا‎), was an armed Islamist group. Militants participated in the 2011 Libyan Civil War as the Libyan Islamic Movement (al-Harakat al-Islamiya al-Libiya), and are involved in the Libyan Civil War as members of the Libya Shield Force. Alleged militants include alleged Al Qaeda organizer Abd al-Muhsin Al-Libi who now holds a key command position in the Libya Shield Force.

In the 2011 civil war, members claim to have played a key role in deposing Muammar Gaddafi. The force was part of the National Transitional Council.

However the organisation has a troubled history being under pressure from Muammar Gaddafi and shortly after the September 11 attacks, LIFG was banned worldwide (as an affiliate of al-Qaeda) by the UN 1267 Committee. Listed at the Foreign Terrorist Organizations, the group has denied ever being affiliated with al-Qaeda, stating that it refused to join the global Islamic front Osama bin Laden declared against the west in 1998.