The Celtics' Jaylen Brown was voted the NBA Finals Most Valuable Player (FMVP), after averaging 20.8 points, 5.4 rebounds, and 5.0 assists per game.

[3] In the first round of the playoffs, they faced the Miami Heat in a rematch of the previous year's Eastern Conference Finals, and won the series 4–1.

Due to injuries to key players on all three opposing teams during their run through the Eastern Conference playoffs, the Celtics' path to the Finals was considered by media writers as one of the easiest in NBA history.

In their last appearance in 2011, the team, which featured current head coach Jason Kidd at point guard, won their first and only title.

Boston's Kristaps Porziņģis returned from injury after not playing in a game for 38 days and recorded 20 points and three blocks off the bench.

Luka Dončić led Dallas with 30 points as the Celtics held the Mavericks to just nine assists on its 35 field goals as a team.

[14] A moment of silence was held before the game in memory of Bill Walton, the two-time NBA champion—including in 1986 with the Celtics as their sixth man—and broadcaster, who died on May 27 of colorectal cancer at the age of 71.

[18][19] Led by Luka Dončić's 29 points, the Mavericks staved off elimination with a 122–84 blowout victory to cut Boston's series lead to 3–1.

As for the Celtics, Jayson Tatum led his team with 15 points while Sam Hauser added 14, and Jaylen Brown and Jrue Holiday scored 10 each.

The loss ended a 10-game postseason winning streak, which began when the Celtics defeated the Cleveland Cavaliers in Game 3 of the Eastern Conference Semifinals.

[23] The Celtics finished the first half of the game with a 21-point lead, which culminated with Payton Pritchard's buzzer-beating half-court throw, which was the longest shot made in the NBA Finals in the past 25 years, since 1998.

[22] Jaylen Brown was voted the Bill Russell NBA Finals Most Valuable Player (MVP), after averaging 20.8 points, 5.4 rebounds, and 5 assists.

[28] With the win, the Celtics finished with the second-best postseason record (16–3) since the NBA went to four best-of-seven rounds of the playoffs in 2003, only behind the 2016–17 Golden State Warriors, who went 16–1.

Tatum and Brown's 107 playoff games played together represent the most by a duo prior to winning their first championship in NBA history.

It also represented the first championship for 2023–24 NBA Executive of the Year Award winner, Brad Stevens, and the culmination of a ten-year rebuild that began when he originally joined the Celtics in 2013 as the head coach.

This marked the first and only Finals called by the team of play-by-play announcer Mike Breen, analysts Doris Burke and JJ Redick, and sideline reporter Lisa Salters.