; born January 3, 1985) is a Lithuanian professional basketball player.Standing at 6 ft 8 in (2.03 m), he plays either forward position.He also represented the Lithuanian national basketball team in the international competitions. At 16 years old he moved to the United States where he attended Montrose Christian School and graduated in 2003.
He led the tournament in scoring, averaging 29.1 points per game on 58 percent shooting.
As a senior, he was named a third-team Parade All-American.
Kleiza played college basketball with the University of Missouri Tigers.
He was named Honorable Mention All-Big 12 by the league coaches as a sophomore.
He also earned All-Tournament honors at the 2005 Big 12 Tournament after averaging 29.5 points and 9 rebounds per game.
Kleiza was selected by the Portland Trail Blazers with the 27th pick of the 2005 NBA Draft. He improved on his three-point shooting in his sophomore year, making 83–221, after only making two three-pointers in his rookie year.The Trail Blazers then dealt his draft rights, along with Ricky Sanchez to the Denver Nuggets in exchange for Jarrett Jack. He also saw some more time on the court and averaged 7.6 points on 42 percent shooting in 18.8 minutes per game.After the season, Denver picked up their team option on his contract for another season.Kleiza became a big part of Denver's rotation in the 2007–08 season, mostly backing up Denver's starting small forward Carmelo Anthony.However, he was involved in a lot of trade talks, most notably a trade involving Ron Artest of the Sacramento Kings.His scoring average was up to 11.1 points per game and his shooting percentage was up to 47 percent.