Language packs are already included in your game license. You do not need to pay extra or download files from unknown websites; you simply trigger the download through your official console or PC launcher. How to Install the English Language Pack on PC
How to Install the English Language Pack on Xbox (One / Series X|S)
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If the official settings don’t resolve the issue—often common in specific regional versions like Russian or Polish—you may need to manually swap localization files:
Select , then click Modify Install again in the pop-up window. Under the Languages section, check the box for English . Language packs are already included in your game license
Navigate to your game installation directory (e.g., C:\Program Files (x86)\Steam\steamapps\common\Call of Duty ).
and wait for the download to complete.
Many players discovered that purchasing a Russian (CIS region) key for MW3 was significantly cheaper than buying a global copy. However, those copies often installed with Russian text and voice by default. Fortunately, even for Russian Steam keys, the language can be changed using the exact same Steam method described above. Go to your Steam library → right‑click MW3 → Properties → Language → select English. Steam will then download the English language pack automatically.