TMZ Sports has learned Mayweather Promotions filed a petition with the U.S. Patent and Trademark Office to use "TBE" (The Best Ever) for cologne, perfume and other cosmetic and skin care products.

Floyd's a big fan of self-pampering ... so it sorta makes sense.

Sources close to Mayweather tell us the plans are only in the beginning stages -- so don't expect TBE to hit the perfume counter anytime soon.

If it does come to fruition, Floyd will join an elite club of jocks with their own signature scents -- including Michael Jordan, David Beckham, Cristiano Ronaldo and Zlatan Ibrahimovic.