2005–06 Phoenix Suns season

The 2005–06 Phoenix Suns season was the 38th season of the franchise in the National Basketball Association (NBA). The Suns were led by head coach Mike D'Antoni, posting a 54–28 record, third best in the Western Conference. All home games were played at the former America West Arena, which changed its name to US Airways Center in January 2006.

The Suns looked to improve on their league-best 62–20 record and a trip to the Western Conference finals in the 2004–05 season. The Suns suffered a major setback before the season, when All-Star Amar'e Stoudemire underwent microfracture surgery on his left knee. Stoudemire returned for three games, before undergoing another surgery on his right knee. The team was led by defending MVP Steve Nash and All-Star Shawn Marion. Marion led the team in points (21.8), rebounds (11.8), steals (2.0) and blocks (1.7) per game. Nash led the league in assists with 10.5 a game, while posting a career- high 18.8 points a game, earning his second consecutive MVP award.

With injuries to Stoudemire and backup forward-center Kurt Thomas, the Suns looked to second-year forward Boris Diaw to fill in the middle. Listed in the Suns' media guide as a guard before the season, the 6-foot 8-inch Diaw started at small forward, power forward and center throughout the season, posting 13 points, 7 rebounds, 6 assists and a block a game, earning Most Improved Player honors.

In the first round of the playoffs, the Suns fell into a 1–3 hole against their longtime rivals, the Los Angeles Lakers. They became, at the time, the eighth team in NBA history to recover from a 3–1 deficit, winning the final three games of the series to advance to the semifinals. In the semifinals, they defeated the Lakers' Staples Center co-tenants, the Los Angeles Clippers, in another seven-game series. The Suns fell in the conference finals to the Dallas Mavericks in six games.