Scott Disick's officially ditched rehab in Costa Rica ... so he can spend quality time at the local nightclubs.
Disick was spotted hanging near the bar in a club called Rouge on Saturday night. Sporting a black tee and ball cap ... Scott seemed like he was trying to keep a low profile -- but hanging with a big bodyguard in purple ain't exactly inconspicuous.
Witnesses tell us he also hit up a spot called Vertigo.
TMZ broke the story ... Scott bailed on the Costa Rican rehab program after less than a week. He's coming back to the states, and already has club gigs booked back here.
After we posted our story, Scott posted (and then deleted) a photo touting his upcoming appearance at 1OAK in Las Vegas.