I want to know if I can use my custom fonts in Google Docs or any other Google Drive products.
Sorry, you can't. All of the fonts for use on Google Docs are powered by their Google Web Fonts service. You can only add fonts that are listed on that service. Instructions on how to do that are here http://support.google.com/drive/bin/answer.py?hl=en&answer=189190
protected by Community♦ Nov 15 '13 at 4:14
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site.
Would you like to answer one of these unanswered questions instead?