More girl trouble for Terrence Howard ... this time the actor claims his ex-GF showed up to his home in Pennsylvania and smacked him in the face.
According to CBS Philly, 39-year-old May Seng Yang was arrested over an incident at Howard's home on May 6.
Howard reportedly told police Yang knocked on his front door around 11 PM ... and when he opened up with his new GF by his side, Yang clocked him in the nose.
Howard reportedly told police he was romantically involved with Yang for several years ... but she wouldn't leave him alone after he broke things off.
Yang was charged with assault, trespassing, harassment and disorderly conduct -- but Yang is denying the allegations ... claiming SHE was the one who was attacked that fateful night.
Yang is due in court in June.
Meanwhile, Howard is still in a legal war with his estranged wife Michelle ... who claims the actor got violent with her on several occasions. Howard says it's all BS ... claiming she's a racist who threatened to have him killed.