Lamar Jackson isn't messing around when it comes to building his brand -- he's already trying to lock up the trademark rights for "Truzz" ... the same words he just had tatted on his chest.
Remember, Lamar's Baltimore Ravens teammate, Mark Ingram, began referring to LJ as "Big Truss" during his insane 2019 NFL season ... and the nickname stuck!
But, someone else made a run on the "Big Truss" trademark -- so Lamar called an audible, made some spelling changes ... and now, he's filled an application to own "Truzz," TMZ Sports has learned.