Most players use Steam. Here is the safe, official method to install the English language pack.
For PC players, Steam makes the process relatively straightforward. Because the English files are official assets, you usually don't need to hunt for external "cracked" packs. Right-click Call of Duty: Black Ops III . Select Properties: Navigate to the Language tab. Choose English: Select "English" from the dropdown menu. cod black ops 3 english language pack
If you have a region-locked version (like the Russian "RU" edition) where the English option is missing from the Steam menu, players often use unofficial language packs. Most players use Steam
Look for "Language Data" packs and select to download. Xbox One / Series X|S : cod black ops 3 english language pack