“Midnight in Paris” star OWEN WILSON’s big brother is a deadbeat dad who owes tens of thousands of dollars in child support!

Actor Andrew Wilson, 47, has fathered four children with four differ­ent women, and insiders say new dad Owen, 43, is pressuring him to take financial and emotional responsibility for them.

“Andrew is pretty much a good-time Charlie,” a longtime family friend told The ENQUIRER. “He works on films when he can get them and the rest of the time he kicks back.

“It breaks Owen’s heart that his big brother is a deadbeat dad. He’s trying to get Andrew to grow up and start acting like a man.”

Andrew – who’s had smallroles in “Rushmore,” “Zoolander” and “The Royal Tenenbaums” – hasn’t achieved nearly the same success in Hollywood as broth­ers Owen and  Luke, 40.

And Owen feels that’s part of the reason he’s never settled down, said the source.

“Andrew has no shame!” the family friend confided.

“He’s basically on the lam from three women in California that he owes child support to, and now he has a new baby in Hawaii. 

"Andrew’s California offspring in­clude a 2-year-old son with clothing designer Miki Dinning, a 7-year-old son with his ex-wife Nnogo Obiamiwe, and another child with an ex-girl­friend. Miki sued Andrew For child support but hasn’t been able to serve him with legal papers. Andrew is hanging out in Hawaii, and no one knows where he’s living,” the source divulged.

“Owen is giving Miki money to help take care of the baby.”

FOR THE FULL STORY with all the details it’s only in The ENQUIRER – on sale now.