Will Ferrell turned 22,000 soccer fans into RAGING LUNATICS on Sunday ... and the video is pretty great.
The comedy legend -- who's part owner of LAFC -- got hands-on with his futbol team's crowd in a game against Vancouver ... leading an epic chant that turned Banc of California Stadium into a zoo.
"Jump for LA Football Club, OLE! OLE!" Ferrell roared.
The stadium loved it ... and other angles of the chant revealed a DOPE scene.
Extended version of @LAFC supporter section going HAM today. pic.twitter.com/IZcoGgZPVN
Bad news for Will ... LAFC ended up tying the Whitecaps, 2-2, and is now in jeopardy of losing out on a top-two seed in the MLS' Western Conference.
Good news for Will ... L.A.'s still going to the playoffs, baby!!
OLE! OLE!