Miami Heat
On June 15, 1995, Riley resigned from the Knicks via fax to become president and head coach of the Miami Heat, with complete control over basketball operations. The move caused some controversy, as the Heat were accused by the Knicks of tampering by pursuing Riley while he still had a year remaining on his contract with the Knicks. The matter was settled after the Heat sent their 1996 first-round pick (which the Knicks used to draft Walter McCarty) and $1 million in cash to the Knicks on September 1, 1995.
In the 1995–96 NBA season, Riley led the Heat to a 42–40 record, which was a 10-game improvement over the team's previous season. Miami was swept in the first round of the playoffs by the Phil Jackson-coached Chicago Bulls, who went on to win the NBA championship. This Heat season was notable for personnel changes, as the team welcomed franchise building blocks Alonzo Mourning and Tim Hardaway. Following the season, the Heat also obtained Nets forward P.J. Brown and Suns swingman Dan Majerle.
In 1997, Riley's Heat defeated his old team, the Knicks, in a physical seven-game series. Advancing to the Eastern Conference finals for the first time in franchise history, the Heat were again defeated by the eventual champion Bulls. Riley was selected as Coach of the Year for the third time after leading Miami to a 61–21 regular season record and first place in the Atlantic Division.
The Heat lost to the archrival Knicks in 1998, 1999, and 2000 in the playoffs. Riley then traded Brown and Jamal Mashburn in exchange for Eddie Jones in one trade and acquired Brian Grant in another, although the team suffered a major setback after Alonzo Mourning was lost for the season due to a kidney ailment. After finishing 50–32 in the 2000–01 season, the Heat were swept by the Charlotte Hornets in the first round of the NBA playoffs. The Heat then lost two of their best players when guard Tim Hardaway was traded to the Dallas Mavericks and Anthony Mason signed with the Milwaukee Bucks. In part because of these departures, the Heat crumbled to a 36–46 in 2002–the first time that a Riley-coached team had not had a winning season or made the playoffs.
After the Heat finished the 2002–03 season 25–57, Riley stepped down as head coach and was succeeded by longtime assistant Stan Van Gundy. In the 2003 NBA draft, the Heat held the fifth overall pick, which they used to select Dwyane Wade. In July 2004, Riley traded Caron Butler, Brian Grant, Lamar Odom, and a first-round draft pick to the Lakers for star center Shaquille O'Neal. Wade and O'Neal led the Heat to the Eastern Conference finals during the 2005 playoffs, where they lost to the defending champions Detroit Pistons after leading the series 3–2.
During the 2005 off-season, it was widely speculated that Riley was attempting to push Van Gundy out and make himself head coach once again now that the team was a championship contender. Van Gundy resigned from his position just 21 games into the 2005–06 season, citing a need to spend more time with his family, and Riley named himself as Van Gundy's successor. Riley's Heat team defeated the Detroit Pistons in the 2006 Eastern Conference finals on June 2, 2006, the first time Miami reached the finals. Riley's Heat squared off against the Dallas Mavericks in the 2006 NBA Finals. Despite losing the first two games, the Heat rallied to win the next four and their first NBA championship. After Game 6, Riley commented that he had packed one suit, one shirt, and one tie for the trip to Dallas. It was Riley's fifth championship as a head coach and his first with a team other than the Lakers.
Citing hip and knee problems, Riley took a leave of absence from coaching from January 3, 2007, through February 19, 2007. Assistant coach Ron Rothstein assumed interim duties. The Heat finished the season 44–38 and were swept in the first round of the playoffs by the Chicago Bulls, the first defending champions swept in the first round since the Philadelphia Warriors in 1957. The following season, the Heat finished 15–67. The team had lost several of its players to extended injuries, and a disgruntled Shaquille O'Neal was traded mid-season. Two years after winning the championship, they finished with one of the worst seasons in NBA history. It also tied the Heat's inaugural season of 1988–89 as the worst in franchise history, and was easily the worst full-season record compiled by a Riley-coached team.
On April 28, 2008, Riley announced that he would step down as head coach while remaining team president. He named assistant Erik Spoelstra as head coach. Although the Heat have nominally had a general manager for most of Riley's tenure as team president (Randy Pfund until 2008, and Andy Elisburg since 2013), Riley has had the final say in basketball matters since his arrival in Miami.
In 2010, Riley acquired LeBron James and Chris Bosh to form the Heat's "Big Three" with Dwyane Wade. Riley was named NBA Executive of the Year for the 2010–11 season. The Heat reached the NBA Finals each of the next four seasons (2011 through 2014). Although the Heat lost in 2011 to the Dallas Mavericks, the Heat would beat the Oklahoma City Thunder in the 2012 Finals to give Riley his first championship purely as an executive. The Heat repeated as champions in 2013, defeating the San Antonio Spurs in seven games. They would go on to lose in 2014 to the Spurs in five games.
In the 2019–20 season, the Heat became the fourth team in NBA history to finish lower than fourth place in their conference in the regular season and make it to the NBA Finals. The 2019–20 Heat team has been considered by some to be Riley's "magnum opus", since the team's Finals run was not preceded by a dramatic rebuild or by the selection of a high draft pick. Before the season, Riley traded for Jimmy Butler, drafted Tyler Herro, and signed the undrafted Kendrick Nunn. Before the 2019–20 trade deadline, the Heat obtained Andre Iguodala and Jae Crowder. Facing Riley's former team, the Los Angeles Lakers, led by former Heat superstar LeBron James, the Heat were defeated in six games. In 2023, the Heat had a similarly unprecedented run to the finals as an 8th-seeded team, becoming the second 8th seed to reach the finals. Ironically, the first were the Knicks, who defeated Riley's 1st-seeded Heat in the 1999 playoffs. However, the Heat lost to the Denver Nuggets in five games in the Finals.
Prior to the 2024–25 season, the Heat honored Riley by dedicating the Kaseya Center floor as the "Pat Riley Court at Kaseya Center". On February 5, 2025, Riley traded Butler to the Golden State Warriors in a five-team deal that gave the Heat Kyle Anderson, Davion Mitchell, Andrew Wiggins, and a 2025 protected first-round pick from the Warriors. During the following 2025–26 season on February 22, 2026, the Lakers also honored Riley by unveiling an 8–foot–tall, 510–pound bronze statue of him outside of Crypto.com Arena in Star Plaza sitting right between the statues of Lakers legends Kareem Abdul-Jabbar and Magic Johnson, making him the first non-player in Lakers history to be immortalized with a dedicated statue and honoring him and his accomplishments as both a player and a coach for the Lakers franchise. Sculpted by Omri Amrany and Sean Bell, the statue portrays Riley in his iconic Giorgio Armani suit with his right fist raised in the air—the signal he used during the 1980s Showtime era, replicating the famous on-court signal Riley used to instruct Johnson to feed Abdul-Jabbar for his signature skyhook, hence the placement of where the statue was immortalized.