It was the Lakers' first loss this postseason.
Game 4 of the Western Conference semifinal is Sunday at Utah.
The win made the home teams 11-0 in the four conference semifinal series.
Deron Williams had 18 points and 12 assists for Utah, which atoned for two miserable performances in Los Angeles by taking the lead early in the second quarter and hanging on to it the rest of the way.
Kobe Bryant scored 34 points for the Lakers, who got within three points with 3:22 to play but never caught the Jazz.
Utah improved to 4-1 in the playoffs at home, where the Jazz had the league's best mark in the regular season (37-4).
Utah's offense was stagnant in the first two games, but on Friday the Jazz started hitting from the outside and moving the ball around enough to clear the inside for the layups their offense is designed to create.
Utah went 39-for-78 from the field (50 percent) and overcame Los Angeles' advantage from the foul line. The Jazz took nine fewer free throws than the Lakers, but went 20-for-28 from the line and held off the late push by Bryant and the Lakers.
Los Angeles went on a 6-0 run to get within 95-92, then Boozer went to work. He hit a hook shot over Luke Walton in the lane to put Utah up 97-92, then Bryant lost the ball while falling and didn't get the foul call he wanted. The Jazz used 23 of the 24 seconds they had on the shot clock and Boozer made a shot over Lamar Odom.
After Bryant missed a 3-point attempt, the Jazz got the rebound and went to Boozer again for a 101-92 lead with 1:57 left.
Walton hit a 3-pointer with 1:08 left to get Los Angeles within 103-97, then Bryant made two from the line to get the Lakers within four.
The Jazz missed again at the other end, but the Lakers bobbled the ball, too, and Williams crashed to the floor for a loose ball and forced a jump ball. The guard didn't stand a chance against Lakers center Pau Gasol, but it ate up time and the Lakers turned it over again.
