Is Call of Duty: Modern Warfare 2 (PS3) Multi-Region? No—Region Locked

No. Call of Duty: Modern Warfare 2 on PS3 is region-locked. A disc from one region only works on a console set to that region (e.g., NA disc → NA console only).

Workarounds like modchips exist but void warranty and risk damage. Best: buy a disc matching your console's region.