The actor, star of Step Brothers and Anchorman, is part of an ownership group along with Magic Johnson, Tony Robbins and Vincent Tan.
He was unable to contain his excitement at the final whistle, as he took to the pitch to join in with the fans chanting.
LAFC’s loyal fanbase remained in the Banc of America Stadium for 15 minutes after the final whistle singing and chanting while the players remained on the pitch.
Watch the footage here:
LAFC secured the three points after a 94th-minute winner from Adama Diomande.
Los Angeles had originally gone behind thanks to a Kristin Nemeth goal after 16 minutes, before Diego Rossi equalised for LA just after half-time.
Ferrell has been ever-present at LAFC games since becoming a part-owner, and is usually decked out in club gear.
Before the team joined the league in 2017, he spoke to ESPN about how he became involved with the franchise, and insisted that it wasn’t simply a business venture.
“I love watching it generally speaking,” he declared.
“I don’t really have a side per se until LAFC get started and that will definitely be, obviously, my team.
“But I just enjoy watching the fact that it’s played all over the world.
“There are so many amazing players and so many top flight leagues.
“Hopefully MLS can be on par, eventually, with the European leagues.
“Believe it or not, one of the members of the ownership group is a fellow dad and our kids go to the same school.
“And he sent me an email saying: ‘Hey, I don’t know if this would be interesting to you. We’re forming this ownership group and I know you played soccer.’ And I was talking to my wife and I said ‘This would be fantastic”.
Ferrell is preparing to take on the role of former FIFA official Chuck Blazer in a film about corruption in football.