Tennis tumult!

President Trump’s appearance at the Men’s Singles final of the US Open on Sunday afternoon caused havoc for tennis fans, including a slew of celeb attendees.

“It is an absolute s–t show,” one source told Page Six exclusively. “Cars can’t get into parking lots and people are walking miles. Even celebs are having to wait like normies.”

The source added that security “has stopped entry in so many ways.”

Catherine Zeta-Jones, Michael Douglas and Ben Stiller were spotted “waiting in line, like everyone else,” while Debra Messing “sat in a car for an hour and they wouldn’t let her out.”

Lindsay Lohan was also spotted traipsing in parking lots.

Stiller eventually got to his seat along with other celebs, including Mindy Kaling, Bruce Springsteen, B.J. Novak and Sting, to watch Jannik Sinner take on Carlos Alcaraz.

Earlier this week, Page Six exclusively reported that the President would be attending the tennis final for the first time since the Queens-born pol was booed at Arthur Ashe Stadium in 2015.

At the time, he attended the US Open with his wife, Melania Trump, to see Serena Williams play her older sister, Venus Williams, and was booed by fans as he entered.

This time, the President was joined by several members of his administration, including US Attorney General Pam Bondi, White House Chief of Staff Susie Wiles and Treasury Secretary Scott Bessent.

His son-in-law Jared Kushner and granddaughter Arabella were also present.

Before his appearance, the United States Tennis Association had advised broadcasters not to televise any negative reaction he might receive from the crowd.

“We ask all broadcasters to refrain from showcasing any disruptions or reactions in response to the President’s attendance in any capacity, including ENG (Electronic News Gathering) coverage,” the USTA advised.

Social media posts reveal that the President was loudly booed as he saluted during the National Anthem.