Matt Kemp -- I'm NOT Beefing with Marshawn Lynch ... He's The Original 'Beast Mode'

Marshawn Lynch may have blocked Matt Kemp from "Beast Mode" ... but Kemp tells TMZ Sports, he's got NO PROBLEMS with the running back -- in fact, he respects the guy.

Both Kemp and Lynch have been using the term "Beast Mode" for years -- referring to the super-human level they go to in big games.

But Lynch owns the trademark to the phrase -- not Kemp -- and when the Dodgers recently went to Marshawn and asked for permission to use "Beast Mode" on Kemp-related products, Lynch gave 'em the ol' thumbs down.

So, when we got Kemp out in L.A. yesterday we assumed he'd be upset about situation -- but Matt insists, that couldn't be further from the truth.