Cory Allen Jefferson (born December 26, 1990) is an American professional basketball player for Olimpia Milano of the Italian LBA and the EuroLeague. He played college basketball for Baylor University and represented the United States at the 2013 Summer Universiade in Kazan, Russia. 
High school career
Jefferson attended Killeen High School in Killeen, Texas. As a sophomore in 2006–07, he averaged 13.5 points, 10.5 rebounds and 5.1 blocks per game, earning All-District 16-4A first team honors. As a senior in 2008–09, he averaged 19.5 points and 6.2 rebounds per game, leading Killeen to three straight 30-win seasons and four consecutive district championship. 
Considered a four-star recruit by Rivals.com, Jefferson was listed as the No. 13 power forward and the No. 51 player in the nation in 2009.
After redshirting the 2010–11 season, Jefferson returned to the Bears for the 2011–12 season. In his sophomore season, he had 5 double-digit scoring and 12 multiple block games; his 42 blocks ranked 10th on Baylor's single-season list. In 34 games (one start), he averaged 3.6 points, 2.6 rebounds and 1.2 blocks in 10.5 minutes per game. 
In his junior season, Jefferson was named to the NIT All-Tournament team after he helped Baylor win the NIT championship. He also earned Big 12 honorable mention honors at the end of the season. In 37 games (all starts), he averaged 13.3 points, 8.0 rebounds and 1.9 blocks in 27.9 minutes per game. 
In his senior season, Jefferson was named to the 2014 All-Big 12 third team. He was also named the 2014 USBWA District VII Player of the Year. In 38 games (all starts), he averaged 13.7 points, 8.2 rebounds and 1.3 blocks in 29.0 minutes per game. 
Brooklyn Nets (2014–2015)
On June 26, 2014, Jefferson was selected with the final pick in the 2014 NBA draft by the San Antonio Spurs. He was later traded to the Brooklyn Nets on draft night.  He later joined the Nets for the 2014 NBA Summer League,  and signed with the team on July 23.  Jefferson received his first and only start of the season on December 13 in a 114–87 win over the Charlotte Hornets. In 23 minutes of action, he recorded 11 points on 5-of-5 shooting and 5 rebounds.   On January 1, 2015, using the flexible assignment rule, the Nets assigned Jefferson to the Maine Red Claws, the affiliate of the Boston Celtics.  On January 8, he was recalled by the Nets.  On March 6, Jefferson recorded his first career double-double with season-highs of 12 points and 13 rebounds in over 15 minutes of action in a 108–100 overtime loss to the Phoenix Suns.  
Phoenix Suns (2015–2016)
On September 16, 2015, Jefferson signed a one-year, non-guaranteed contract with the Phoenix Suns.  After impressing head coach Jeff Hornacek and general manager Ryan McDonough during preseason, Jefferson made the Suns' opening night roster for the 2015–16 season.   He made his debut for the Suns on November 14, recording 2 points and 2 rebounds in a 105–81 win over the Denver Nuggets.  On January 7, 2016, he was waived by the Suns after appearing in just six games. 
On January 20, 2016, Jefferson was acquired by the Bakersfield Jam of the NBA Development League.  The next day, he returned to the Suns, signing a 10-day contract with the team.  After his 10-day contract expired, playing two more games with the team in the process, he was not retained by the Suns.
Bakersfield Jam (2016)
On February 1, 2016, Jefferson was reacquired by the Bakersfield Jam.  The next day, he made his debut for the Jam in a 132–111 win over the Oklahoma City Blue, recording 18 points, 14 rebounds, 3 assists and 1 block in 34 minutes. 
Austin Spurs (2016–2017)
In July 2016, Jefferson joined the Cleveland Cavaliers for the 2016 NBA Summer League.  On September 26, 2016, he signed with the Cavaliers,  but was later waived on October 20 after appearing in six preseason games.  He ultimately joined the Austin Spurs of the NBA Development League on November 12, 2016.  On February 6, 2017, he was named in the Western Conference All-Star team for the 2017 NBA D-League All-Star Game. 
Olimpia Milano (2017–present)
NBA career statistics
|GP||Games played||GS||Games started||MPG||Minutes per game|
|FG%||Field goal percentage||3P%||3-point field goal percentage||FT%||Free throw percentage|
|RPG||Rebounds per game||APG||Assists per game||SPG||Steals per game|
|BPG||Blocks per game||PPG||Points per game||Bold||Career high|
Jefferson is the son of Fancy Pace and the late Charles Jefferson.  His mother served 21 years in the military.