The 2006 NBA Finals was the championship series of the 2005–06 National Basketball Association season. The Miami Heat won the championship in six games over the Dallas Mavericks, winning the final game at the American Airlines Center in Dallas, and becoming the third team to win a championship after trailing 0–2 in the series.

This was Dallas' and Miami's first appearance in the finals, as well as the second matchup of teams from Florida and Texas (with the Houston Rockets and Orlando Magic participating in the 1995 NBA Finals). Heat guard Dwyane Wade was named Most Valuable Player of the series. It was also the first Finals not to have either the Los Angeles Lakers or San Antonio Spurs since 1998. It also marked the first time since 1971 that the Finals featured both teams playing in their first NBA Finals series. To date, it is also the last Finals loss by a team from Texas (the Rockets lost in 1981 and 1986) against seven championships (four by the Spurs, two by the Rockets, and one by the Mavericks, who won a rematch of this Finals in 2011).

The NBA Finals is the championship series of the NBA. The series was named the NBA World Championship Series until 1986.

The series is played between the winners of Western Conference Finals and Eastern Conference Finals. At the conclusion of the championship round, the winners of the NBA Finals are awarded the Larry O'Brien Championship Trophy. (Winners from 1946 to 1977 received the Walter A. Brown Trophy) The NBA Finals has been played at the conclusion of every NBA and BAA season in history, the first being held in 1947.

Since 1985, the winner of the NBA Finals has been determined through a 2–3–2 format. The first two and the last two games of the series are played at the arena of the team who earned home court advantage by having the better record during the regular season.

During the first decade the Minneapolis Lakers had the first NBA dynasty, winning 5 championships in 6 years under Hall of Fame head coach John Kundla. The team also featured George Mikan, one of the greatest players in the history of the NBA. Franchises which had previously been in the National Basketball League tended to dominate, especially the Minneapolis Lakers.

Dwyane Tyrone Wade, Jr. (born January 17, 1982), nicknamed Flash or D-Wade, is an American professional basketball player for the Miami Heat. Awarded 2006 Sportsman of the Year by Sports Illustrated, Wade has established himself as one of the most well-known and popular players in the league. He had the top selling jersey in the NBA for nearly two years, as he led the NBA in jersey sales from the 2005 NBA Playoffs, until the mid-point of the 2006–07 season.

After entering the league as the fifth pick in the 2003 NBA Draft, Wade was named to the All-Rookie team and the All-Star team the following eight seasons. In his third season, Wade helped lead the Miami Heat to their first NBA Championship in franchise history. He was named the 2006 NBA Finals MVP as he helped lead the Heat to a 4–2 series win over the Dallas Mavericks. At the 2008 Summer Olympics, Wade led the United States Men's Basketball team, commonly known as the "Redeem Team", in scoring, as they captured gold medal honors in Beijing, China. In the 2008–09 season, Wade led the league in scoring and earned his first NBA scoring title.