Tyler Perry is facing an accusation of sexual assault — a claim that comes from one of the actors on his long-running TV show, “The Oval” … TMZ has learned.

Derek Dixon filed a lawsuit against Perry, and in the docs he claims he and the director met at an event back in 2019 — in Derek’s words, Tyler picked him out of the crowd and asked for his phone number, suggesting he might have a role for him.

As it turns out, he did … Derek says Tyler gave him a small role in 2 episodes of a show called, “Ruthless.”

Then, in January 2020, Derek says Tyler invited him to his Atlanta home, and he accepted, hoping to build a friendship that would lead to more acting gigs. But, according to the suit, while there … Derek drank too much, and ended up sleeping in a guest room.

In the docs, obtained by TMZ, Derek claims Tyler got into the bed with him, and started touching his thighs — and, although, he rejected the advances that night … he claims Tyler remained interested.

To that point, he says Tyler, once again, invited him to Atlanta later in 2020 … and things allegedly took a dark turn. Derek claims Perry greeted him warmly, but quickly started a sexually charged conversation — like asking him if he “likes it rough in bed” — and then grabbed Derek by the throat while saying, “Look how excited you just got.”

He says he pushed Tyler away, and that was the end of that alleged incident.

The lawsuit includes years of text messages allegedly sent by between both men — most of the ones Tyler allegedly sent are sexually charged … for instance one reads, “No straight man would be going on walks with you or cooking dinner for you unless they wanted to f**k you. I would f**k you.”

The most aggressive incident allegedly went down in June 2021, again at Tyler’s Atlanta home — Dixon was staying in the guest house and wearing only his underwear, when he says Tyler came in to give him a goodnight hug.

He alleges Tyler yanked down his underwear, groped his butt and said, “Relax and just let it happen” and assured him it wasn’t going to hurt. Dixon says he managed to rebuff this advance by changing the subject.

Dixon is suing for quid pro quo and workplace sexual harassment and sexual assault and battery … and he’s seeking $260 million in damages.

Tyler’s attorney Matthew Boyd tells us, “This is an individual who got close to Tyler Perry for what now appears to be nothing more than setting up a scam. But Tyler will not be shaken down and we are confident these fabricated claims of harassment will fail.”