Google Drive blog it was announced that 65 languages are now supported in Google Drive. That total includes 18 languages that were added today. You can switch between languages by opening the gear icon in the upper-right corner of your Google Drive home screen and selecting "language" under the "settings" menu. Click here for more directions.
The announcement on the Google Drive blog also reminded me that you can share documents, slides, and sheets with people who use a different language in their Google Drive accounts.