These are the multiplayer factions in Modern Warfare 2:
| Task Force 141 |
 |
A multinational grouping of military units or forces for the performance of a specific operation or assignment.
|
| US Army Rangers |
 |
A military Special Forces Unit of the United States Army. The Regiment is composed of rapidly-deployable light infantry forces with specialized skills that enable them to perform a variety of special operations missions.
|
| Op For |
 |
An opposing enemy force.
|
| Spetsnaz / Ultranationalists |
 |
Russian Army Special Forces, are the original Spetsnaz and are generally considered the best trained units of the Armed Forces of the Russian Federation.
|
| Militia |
 |
Rebellion faction in Rio de Janeiro.
|
| Navy SEALs |
 |
Navy SEALs
|
