For PC players, the language is typically managed through the game launcher.
Consoles often require downloading separate "Language Data" packs through the system's content management tools. call of duty mw3 english language pack
If you are playing the classic Modern Warfare 3 (2011) and the launcher settings aren't working, you may need to manually replace localization files. For PC players, the language is typically managed
: Open the Blizzard Battle.net launcher and select MW3. Click the Options (gear icon) next to the "Play" button and choose Game Settings . Under the Text and Spoken Language section, select English and click "Done" to start the download. How to Change Language on Consoles (PS5 & Xbox) : Open the Blizzard Battle
Replace these with the English equivalent, typically named localized_english_iw07.iwd .
Locate files named localized_xx_iw07.iwd (where "xx" is your current language, like "ru" or "fr").