On August 5, 2014, Jones signed with the Cleveland Cavaliers.
LeBron James, Jones's teammate with the Heat, had asked him to come join him in Cleveland.
The Cavaliers won the Eastern Conference championship and advanced to the NBA Finals.
Facing the Golden State Warriors, the Cavaliers lost the series in six games.
Jones played in 57 games, starting 2, for the Cavaliers during the 2014–15 season while averaging 4.4 points, 1.1 rebounds and 11.7 minutes a game.
He was a DNP-CD for 25 games.

On July 25, 2015, Jones re-signed with the Cavaliers.
In a December 2015 article on ESPN.com by Dave McMenamin, LeBron James said "He's my favorite player of all time" and "He's the greatest teammate I've ever had" in regards to Jones.
The Cavaliers won the Eastern Conference championship for the second year in a row and went on to win the 2016 NBA championship, becoming the first team in history to win the championship after being down 3–1 in the Finals, as Jones won his third title in five years.
He played in 48 games during the 2015–16 season while averaging 3.7 points, 1.0 rebounds and 9.6 minutes a game.
He was a DNP-CD for 34 games.
He was also one of twelve players nominated for the Twyman–Stokes Teammate of the Year Award, finishing tenth place in the voting.
On June 26, 2016, Cavaliers teammate Kevin Love called Jones "the best teammate I've ever had".

On August 3, 2016, Jones re-signed with the Cavaliers.
On January 19, 2017, he started in place of an injured Kevin Love and scored 14 points in a 118–103 win over the Phoenix Suns.
It was his first start since April 2, 2015.
The Cavaliers won the Eastern Conference championship for the third year in a row, as Jones and teammate LeBron James joined Bill Russell, Bob Cousy, K. C. Jones, Sam Jones, Tom Heinsohn, and Frank Ramsey (all from the Boston Celtics) as the only players in NBA history to reach seven consecutive NBA Finals.
Facing the Golden State Warriors in the Finals for the third straight year, the Cavaliers lost the series in five games.
Jones played in 48 games, starting 2, for the Cavaliers during the 2016–17 season while averaging 2.8 points, 0.8 rebounds and 7.9 minutes a game.
On August 5, 2014, Jones signed with the Cleveland Cavaliers. LeBron James, Jones's teammate with the Heat, had asked him to come join him in Cleveland. The Cavaliers won the Eastern Conference championship and advanced to the NBA Finals. Facing the Golden State Warriors, the Cavaliers lost the series in six games. Jones played in 57 games, starting 2, for the Cavaliers during the 2014–15 season while averaging 4.4 points, 1.1 rebounds and 11.7 minutes a game. He was a DNP-CD for 25 games.
On July 25, 2015, Jones re-signed with the Cavaliers. In a December 2015 article on ESPN.com by Dave McMenamin, LeBron James said "He's my favorite player of all time" and "He's the greatest teammate I've ever had" in regards to Jones. The Cavaliers won the Eastern Conference championship for the second year in a row and went on to win the 2016 NBA championship, becoming the first team in history to win the championship after being down 3–1 in the Finals, as Jones won his third title in five years. He played in 48 games during the 2015–16 season while averaging 3.7 points, 1.0 rebounds and 9.6 minutes a game. He was a DNP-CD for 34 games. He was also one of twelve players nominated for the Twyman–Stokes Teammate of the Year Award, finishing tenth place in the voting. On June 26, 2016, Cavaliers teammate Kevin Love called Jones "the best teammate I've ever had".
On August 3, 2016, Jones re-signed with the Cavaliers. On January 19, 2017, he started in place of an injured Kevin Love and scored 14 points in a 118–103 win over the Phoenix Suns. It was his first start since April 2, 2015. The Cavaliers won the Eastern Conference championship for the third year in a row, as Jones and teammate LeBron James joined Bill Russell, Bob Cousy, K. C. Jones, Sam Jones, Tom Heinsohn, and Frank Ramsey (all from the Boston Celtics) as the only players in NBA history to reach seven consecutive NBA Finals. Facing the Golden State Warriors in the Finals for the third straight year, the Cavaliers lost the series in five games. Jones played in 48 games, starting 2, for the Cavaliers during the 2016–17 season while averaging 2.8 points, 0.8 rebounds and 7.9 minutes a game.
James Jones (basketball, born 1980)