The Youngest NBA Players in History

The youngest player in NBA history is Andrew Bynum, who took the court for the Los Angeles Lakers on November 2, 2005 at just 18 years and 6 days old. He remains the only player ever to debut within a week of his 18th birthday, and the age rules that followed mean no one is likely to match him.

For a brief window in the late 1990s and early 2000s, elite prospects could jump straight from high school gyms to NBA arenas, and a handful arrived barely out of their teens. Some became superstars, others faded, but all pushed the boundary of how young a player can be. Here is the full leaderboard of the youngest players in NBA history and why the record at the top is now frozen. All figures are as of the 2025 season.

The record: Andrew Bynum at 18 years, 6 days

Bynum was 17 when the Lakers drafted him 10th overall in 2005 out of St. Joseph High School in New Jersey. He turned 18 a week before the season opener and debuted against the Denver Nuggets, playing a few minutes as the league’s youngest-ever player. He later grew into an All-Star center and a two-time champion before injuries ended his career early.

The same season also cemented a second Bynum record: on January 28, 2006 he became the youngest player ever to start an NBA game, at 18 years and 158 days. Both marks still stand.

The full leaderboard of the youngest NBA players

The table below ranks the youngest players in NBA history by their age on debut. Ages for a few older or high-school-era players vary slightly by source and are marked approximate.

Age at debut	Player	Team	Debut
18 years, 6 days	Andrew Bynum	Los Angeles Lakers	Nov 2, 2005
18 years, 53 days	Jermaine O’Neal	Portland Trail Blazers	Dec 5, 1996
18 years, 72 days	Kobe Bryant	Los Angeles Lakers	Nov 3, 1996
18 years, 133 days	Darko Milicic	Detroit Pistons	Oct 2003
18 years, 139 days	Stan Brown	Philadelphia Warriors	1947 (BAA)
~18 years, 5 months	Tracy McGrady	Toronto Raptors	1997
18 years, 303 days	LeBron James	Cleveland Cavaliers	Oct 29, 2003
~18 years, 11 months	Dwight Howard	Orlando Magic	Nov 2004

Nearly every name here came straight from high school, the common thread among the league’s youngest players. Darko Milicic, taken second overall in the loaded 2003 draft, also holds the record as the youngest player ever to appear in an NBA Finals game.

The high-school-to-NBA era

The players at the top of this list are a product of a specific time. From Kevin Garnett in 1995 through the 2005 draft, teams could select prospects directly out of high school, and the boldest gambles produced teenagers like O’Neal, Bryant, LeBron James and Dwight Howard. Some, like Bryant and James, became all-time greats; others were reminders of how big a leap it is to reach the NBA that young.

Those same prospects often went on to rewrite the record books, from Bryant’s scoring exploits on our most points in a single NBA game leaderboard to the long careers that fill out the oldest NBA players list decades later.

Why the record is permanent

In 2006, the NBA and its players agreed to a new age minimum: draft entrants must be at least 19 and a year removed from high school. That rule instantly ended 18-year-old debuts. Unless the league reverses course, no player can arrive younger than the current crop of one-and-done prospects, all of whom are older than Bynum was, so his 18-years-and-6-days record is safe.

Youth is only one of the ways players stand out from the crowd; for another, see our leaderboard of the tallest NBA players of all time, where the game’s giants tower over everyone else.

Why the record matters

The youngest players capture the sport’s fascination with raw potential, the idea that a teenager might already belong among grown professionals. Bynum’s debut six days after his 18th birthday is the extreme edge of that idea, and thanks to the age rule, it is an edge no one will reach again.

The short version: Andrew Bynum is the youngest player in NBA history at 18 years and 6 days, ahead of Jermaine O’Neal and Kobe Bryant. As of the 2025 season, the league’s age minimum makes the record permanent.