Nelson’s family announced his death Sunday, saying the Hall of Famer passed away peacefully while surrounded by those closest to him.
“On Sunday morning our beloved husband, dad, grandfather and great-grandfather Don Nelson peacefully went to be with the Lord, surrounded by his loving family,” the family said in a statement shared by NBA reporter Marc Stein.
They added that during Nelson’s final week, friends and relatives gathered around him, sharing memories and celebrating the relationships he built throughout his remarkable life.
Nelson leaves behind a basketball legacy that stretches across more than five decades.
During 31 seasons as an NBA head coach, Nelson compiled a 1,335-1,063 regular-season record while leading the Milwaukee Bucks, Golden State Warriors, New York Knicks and Dallas Mavericks.
For years, he stood alone as the winningest coach in NBA history. His record was eventually surpassed by longtime San Antonio Spurs coach Gregg Popovich in March 2022, leaving Nelson second on the all-time list.
Nelson also took his teams to the playoffs 18 times and finished with a 75-91 postseason coaching record.
But his legendary career began long before he ever picked up a clipboard.
As a player, Nelson spent 14 seasons in the NBA and became a key member of the Boston Celtics dynasty. He won five NBA championships during his 11 seasons in Boston, and the Celtics later retired his No. 19 jersey in 1978.
Nelson appeared in 1,053 regular-season games as a small forward and power forward, averaging 10.3 points and 4.9 rebounds. In 150 playoff appearances, he averaged 10.5 points and 4.8 rebounds.
His road to Boston began after a standout college career at Iowa. The Chicago Zephyrs selected Nelson with the 17th overall pick in the 1962 NBA Draft.
He later spent time with the Los Angeles Lakers before Celtics executive Red Auerbach signed him as a free agent ahead of the 1964-65 season.
Nelson flourished in Boston, averaging 11.4 points and 5.2 rebounds per game across his Celtics career while collecting five championship rings.
Almost immediately after retiring as a player, Nelson moved into coaching.
He joined the Milwaukee Bucks as an assistant for the 1976-77 season and was promoted to head coach just 15 games later after Larry Costello was fired.
It was the beginning of one of the longest and most innovative coaching careers the league had ever seen.
Nelson developed an unconventional style that became known as “Nellie Ball.” Instead of relying heavily on traditional big men and slower half-court offenses, Nelson favored smaller, quicker and more versatile lineups.
His teams played fast, attacked mismatches and used athletic players in roles that often defied conventional positions.
Years later, many of the ideas Nelson experimented with would become common throughout the NBA.
The Warriors remembered Nelson on Sunday as a basketball pioneer.
“[Nelson] was a true basketball visionary who saw the game differently and was never afraid to challenge conventional thinking,” the organization said.
“His approach helped shape the game and paved the way for generations of players and coaches who followed.”
The Warriors added that Nelson would also be remembered for his “authenticity, larger-than-life personality, and incredible passion for basketball.”
Nelson won NBA Coach of the Year three times, taking home the honor in 1983, 1985 and 1992.
Despite his enormous regular-season success, an NBA championship as a head coach remained one of the few accomplishments that escaped him.
Nelson spent 11 seasons coaching Milwaukee and missed the playoffs only twice. The Bucks won seven consecutive Central Division titles under his leadership, but powerhouse Boston and Philadelphia teams repeatedly stood between Milwaukee and the NBA Finals.
Nelson eventually resigned after the 1986-87 season.
Following a year working as a television analyst, he returned to coaching with Golden State. He spent seven seasons with the Warriors before resigning midway through the 1994-95 campaign.
Nelson later accepted the New York Knicks coaching job ahead of the 1995-96 season. His time in New York was brief, however, and he was fired after posting a 34-25 record. Assistant coach Jeff Van Gundy replaced him.
His next stop would become another defining chapter of his career.
Nelson joined the Dallas Mavericks in 1997 and played a major role in transforming the struggling franchise into a contender.
Perhaps his most important contribution came through the acquisition of two future Hall of Famers: Dirk Nowitzki and Steve Nash.
Nelson once revealed just how determined the Mavericks were to keep other NBA teams from discovering how good Nowitzki could become before the 1998 draft.
“We hid Dirk for several weeks before the draft,” Nelson told Sports Illustrated.
Nelson said the organization had already committed to drafting the young German star and wanted to prevent rival teams from getting a closer look at him.
“So he hid for a week in Donnie’s basement,” Nelson recalled.
The gamble worked. Nowitzki would eventually become one of the greatest players in NBA history and lead Dallas to its first championship in 2011.
Nelson coached eight seasons with the Mavericks. His son, Donnie Nelson, worked as his assistant and later became the franchise’s general manager before leaving the organization in 2021.
Nelson also coached twice in the NBA All-Star Game and led the United States’ famed “Dream Team II” to a gold medal at the 1994 FIBA World Championships.
After stepping away from professional basketball, Nelson settled into a dramatically different lifestyle.
He retired to a sprawling 22-acre farm on Maui, Hawaii, where he became an entrepreneur and spent his days away from the pressure of NBA arenas.
Nelson told HBO’s “Real Sports” in 2019 that he grew flowers, coffee and cannabis on the property.
He also became part of the Maui community.
Following the devastating wildfires that struck the island in 2023, Nelson opened his rental properties to families who had lost their homes.
From five championships as a Celtics player to more than 1,300 victories as a coach, Nelson’s impact on professional basketball was enormous.
But perhaps his greatest influence came from his willingness to see the game differently.
Long before small-ball lineups and positionless basketball became NBA staples, Don Nelson was already proving they could work.