Participants in Operation Enduring Freedom

Following the September 11 attacks in 2001, several countries began military operations against Al-Qaeda and the Taliban during Operation Enduring Freedom (OEF) in Afghanistan. After the initial bombing operations, Operation Crescent Wind, OEF was the initial combat operations, and during 2002 and 2003.

This list covers United States and other states' forces and other forms of support for OEF from October 2001. Some nations' operations in Afghanistan continued as part of NATO's International Security Assistance Force (ISAF). For example, United States troops were deployed both in the OEF and ISAF.

Between 2003 and 2013 Albania deployed a total of 2399 troops to Afghanistan with members of the Special Operations Battalion (Albania) operating in various mission across the provinces of Kandahar and Herat.

At their peak Australian troops in Afghanistan numbered 1,550. They were one of only three countries to openly support operations in Afghanistan at the war's beginning, along with the United States and the United Kingdom. Australian troops were deployed to Uruzgan province, while Special Forces personnel also operated in Afghanistan.

The Armed Forces of Armenia tripled its Afghan contingent to 130 personnel and possibly increased its military presence in Afghanistan to 260 personnel at the next troop rotation.

The Azerbaijani Armed Forces deployed over 184 soldiers to Afghanistan.

Bangladesh provided the use of its airspace and seaports. Bangladeshi NGOs, particularly BRAC, are among the largest and most active development agencies in Afghanistan.

Bulgaria deployed 608 troops in Afghanistan, as well as medical personnel.