The 2025–26 Boston Celtics season was the franchise's 80th season in the National Basketball Association (NBA). This was the first season under the ownership of Bill Chisholm. For the first time since 2015, the Celtics did not play on Christmas Day amidst the extended absence of Jayson Tatum to rehabilitate his torn Achilles tendon. After missing the first 62 games of the season, Tatum returned on March 6, 2026 against the Dallas Mavericks. However, the Celtics failed to improve over their 61–21 record from the previous season with a loss to the San Antonio Spurs on March 10.

On March 29, 2026, the Celtics gained their 12th consecutive playoff berth since 2015 following a win over the Charlotte Hornets, extending the longest consecutive streak for playoff appearances in the NBA. On April 10, the Celtics clinched their fifth straight division title with a win over the New Orleans Pelicans. Despite what was referred to as a "gap year" due to the expectations brought about by Tatum's injury, the Celtics finished the regular season with a 56–26 record, placing 2nd in the East.

Despite defying expectations in the regular season, the Celtics were upset by the Philadelphia 76ers in the first round in seven games after squandering a 3–1 lead for the first time in franchise history, marking their first series loss to the rival 76ers since 1982, and also marking the first time they were eliminated in the first round since 2021, and the first time in a full season since 2016.

This was the last full season Jaylen Brown would spend with the Celtics before getting traded to the Philadelphia 76ers the following season.

Draft

RoundPickPlayerPositionNationalityCollege / Club 1 28 Hugo González Small Forward Spain Real Madrid () 2 32 Noah Penda Small Forward France Le Mans Sarthe () The Celtics entered the draft holding one late first-round pick and one early second-round pick, the latter of which was acquired from the Detroit Pistons in 2023 and originally belonged to the Washington Wizards. The second-round pick was conveyed to the team as the most favorable pick after Washington finished with a worse record than Detroit and the Golden State Warriors in the previous season. The Celtics had traded their original second-round pick in 2021 to the Orlando Magic, but reacquired it from Orlando via trade on draft night when the pick became Max Shulga in exchange for Noah Penda, whom the Celtics selected using the acquired second-round pick.

Roster

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Standings Division

Conference

Game log Preseason

| 1 | October 8 | @ Memphis | | Jaylen Brown (21) | Luka Garza (10) | Derrick White (10) | FedExForum13,681 | 1–0 |- | 2 | October 10 | @ Toronto | | Boucher, Pritchard (19) | Chris Boucher (9) | Baylor Scheierman (6) | Scotiabank Arena16,282 | 1–1 |- | 3 | October 12 | Cleveland | | Anfernee Simons (21) | Derrick White (7) | Jaylen Brown (6) | TD Garden19,156 | 2–1 |- | 4 | October 15 | Toronto | | Derrick White (33) | Neemias Queta (12) | Payton Pritchard (10) | TD Garden19,156 | 3–1

Regular season

| 1 | October 22 | Philadelphia | | Brown, White (25) | Neemias Queta (8) | Brown, White (4) | TD Garden19,156 | 0−1 |- | 2 | October 24 | @ New York | | Jaylen Brown (23) | Neemias Queta (7) | Payton Pritchard (6) | Madison Square Garden19,812 | 0–2 |- | 3 | October 26 | @ Detroit | | Jaylen Brown (41) | Payton Pritchard (10) | Brown, Pritchard (4) | Little Caesars Arena20,062 | 0–3 |- | 4 | October 27 | @ New Orleans | | Anfernee Simons (25) | Neemias Queta (11) | Payton Pritchard (8) | Smoothie King Center16,787 | 1–3 |- | 5 | October 29 | Cleveland | | Jaylen Brown (30) | Josh Minott (14) | Payton Pritchard (10) | TD Garden19,156 | 2–3 |- | 6 | October 31 | @ Philadelphia | | Jaylen Brown (32) | Josh Minott (8) | Jaylen Brown (6) | Xfinity Mobile Arena19,746 | 3–3

| 7 | November 1 | Houston | | Baylor Scheierman (17) | Josh Minott (6) | Jaylen Brown (5) | TD Garden19,156 | 3–4 |- | 8 | November 3 | Utah | | Jaylen Brown (36) | Neemias Queta (8) | Derrick White (6) | TD Garden19,156 | 3–5 |- | 9 | November 5 | Washington | | Jaylen Brown (35) | Neemias Queta (12) | Derrick White (8) | TD Garden19,156 | 4–5 |- | 10 | November 7 | @ Orlando | | Jaylen Brown (32) | Jaylen Brown (9) | Derrick White (10) | Kia Center19,154 | 4–6 |- | 11 | November 9 | @ Orlando | | Jaylen Brown (27) | Luka Garza (8) | Pritchard, Walsh, White (4) | Kia Center18,096 | 5–6 |- | 12 | November 11 | @ Philadelphia | | Jaylen Brown (24) | Neemias Queta (10) | Derrick White (7) | Xfinity Mobile Arena19,746 | 5–7 |- | 13 | November 12 | Memphis | | Payton Pritchard (24) | Neemias Queta (8) | Payton Pritchard (9) | TD Garden19,156 | 6–7 |- | 14 | November 16 | L.A. Clippers | | Jaylen Brown (33) | Jaylen Brown (12) | Derrick White (9) | TD Garden19,156 | 7–7 |- | 15 | November 18 | @ Brooklyn | | Jaylen Brown (29) | Payton Pritchard (10) | Pritchard, Simons (5) | Barclays Center18,118 | 8–7 |- | 16 | November 21 | Brooklyn | | Jaylen Brown (26) | Neemias Queta (12) | Brown, Pritchard, Simons (4) | TD Garden19,156 | 8–8 |- | 17 | November 23 | Orlando | | Jaylen Brown (35) | Minott, White (7) | Brown, Pritchard (8) | TD Garden19,156 | 9–8 |- | 18 | November 26 | Detroit | | Jaylen Brown (33) | Jaylen Brown (10) | Jaylen Brown (5) | TD Garden19,156 | 10–8 |- | 19 | November 29 | @ Minnesota | | Jaylen Brown (41) | Neemias Queta (18) | Jaylen Brown (7) | Target Center17,344 | 10–9 |- | 20 | November 30 | @ Cleveland | | Payton Pritchard (42) | Jaylen Brown (12) | Jaylen Brown (11) | Rocket Arena19,432 | 11–9

| 21 | December 2 | New York | | Jaylen Brown (42) | (6) | Derrick White (5) | TD Garden19,156 | 12–9 |- | 22 | December 4 | @ Washington | | Derrick White (30) | Walsh, White (7) | Derrick White (9) | Capital One Arena16,026 | 13–9 |- | 23 | December 5 | L.A. Lakers | | Jaylen Brown (30) | Jaylen Brown (8) | Jaylen Brown (8) | TD Garden19,156 | 14–9 |- | 24 | December 7 | @ Toronto | | Jaylen Brown (30) | Neemias Queta (11) | Payton Pritchard (6) | Scotiabank Arena18,492 | 15–9 |- | 25 | December 11 | @ Milwaukee | | Jaylen Brown (30) | Neemias Queta (10) | Payton Pritchard (7) | Fiserv Forum15,458 | 15–10 |- | 26 | December 15 | Detroit | | Jaylen Brown (34) | Jaylen Brown (8) | Jaylen Brown (7) | TD Garden19,156 | 15–11 |- | 27 | December 19 | Miami | | Derrick White (33) | Jaylen Brown (9) | Jaylen Brown (7) | TD Garden19,156 | 16–11 |- | 28 | December 20 | @ Toronto | | Payton Pritchard (33) | Garza, González (10) | Payton Pritchard (10) | Scotiabank Arena19,533 | 17–11 |- | 29 | December 22 | Indiana | | Jaylen Brown (31) | Hugo González (11) | Payton Pritchard (5) | TD Garden19,156 | 18–11 |- | 30 | December 26 | @ Indiana | | Jaylen Brown (30) | Payton Pritchard (9) | Derrick White (6) | Gainbridge Fieldhouse17,004 | 19–11 |- | 31 | December 28 | @ Portland | | Jaylen Brown (37) | Neemias Queta (8) | Pritchard, White (5) | Moda Center17,949 | 19–12 |- | 32 | December 30 | @ Utah | | Derrick White (27) | Derrick White (7) | Jaylen Brown (10) | Delta Center18,186 | 20–12

| 33 | January 1 | @ Sacramento | | Jaylen Brown (29) | Jaylen Brown (10) | Derrick White (7) | Golden 1 Center17,832 | 21–12 |- | 34 | January 3 | @ L.A. Clippers | | Jaylen Brown (50) | Jordan Walsh (13) | Payton Pritchard (8) | Intuit Dome17,927 | 22–12 |- | 35 | January 5 | Chicago | | Anfernee Simons (27) | Neemias Queta (13) | Derrick White (7) | TD Garden19,156 | 23–12 |- | 36 | January 7 | Denver | | Jaylen Brown (33) | Neemias Queta (20) | Brown, White (4) | TD Garden19,156 | 23–13 |- | 37 | January 9 | Toronto | | Payton Pritchard (27) | Jaylen Brown (8) | Payton Pritchard (8) | TD Garden19,156 | 24–13 |- | 38 | January 10 | San Antonio | | Derrick White (29) | Neemias Queta (13) | Jaylen Brown (7) | TD Garden19,156 | 24–14 |- | 39 | January 12 | @ Indiana | | Payton Pritchard (23) | Jordan Walsh (9) | Payton Pritchard (8) | Gainbridge Fieldhouse15,650 | 24–15 |- | 40 | January 15 | @ Miami | | Anfernee Simons (39) | Neemias Queta (9) | Payton Pritchard (8) | Kaseya Center19,700 |25–15 |- | 41 | January 17 | @ Atlanta | | Jaylen Brown (41) | Hugo González (8) | Derrick White (12) | State Farm Arena17,489 |26–15 |- | 42 | January 19 | @ Detroit | | Jaylen Brown (32) | Jaylen Brown (11) | Derrick White (5) | Little Caesars Arena19,996 | 26–16 |- | 43 | January 21 | Indiana | | Jaylen Brown (30) | Jaylen Brown (10) | Payton Pritchard (8) | TD Garden19,156 |27–16 |- | 44 | January 23 | @ Brooklyn | | Payton Pritchard (32) | Jaylen Brown (10) | Jaylen Brown (12) | Barclays Center17,727 |28–16 |- | 45 | January 24 | @ Chicago | | Jaylen Brown (33) | Jaylen Brown (8) | Pritchard, White (7) | United Center22,093 |28–17 |- | 46 | January 26 | Portland | | Payton Pritchard (23) | Jaylen Brown (8) | Neemias Queta (6) | TD Garden19,156 |29–17 |- | 47 | January 28 | Atlanta | | Jaylen Brown (21) | (7) | Luka Garza (6) | TD Garden19,156 |29–18 |- | 48 | January 30 | Sacramento | | Payton Pritchard (29) | Neemias Queta (15) | Derrick White (9) | TD Garden19,156 |30–18

| 49 | February 1 | Milwaukee | | Jaylen Brown (30) | Jaylen Brown (13) | Derrick White (8) | TD Garden19,156 | 31–18 |- | 50 | February 3 | @ Dallas | | Jaylen Brown (33) | Jaylen Brown (11) | Derrick White (8) | American Airlines Center19,132 | 32–18 |- | 51 | February 4 | @ Houston | | Derrick White (28) | Neemias Queta (19) | Derrick White (8) | Toyota Center18,055 | 33–18 |- | 52 | February 6 | Miami | | Jaylen Brown (29) | Nikola Vučević (12) | Derrick White (5) | TD Garden19,156 | 34–18 |- | 53 | February 8 | New York | | Jaylen Brown (26) | Baylor Scheierman (13) | Payton Pritchard (7) | TD Garden19,156 |34–19 |- | 54 | February 11 | Chicago | | Payton Pritchard (26) | Nikola Vučević (11) | Derrick White (9) | TD Garden19,156 | 35–19 |- align="center" |colspan="9" bgcolor="#bbcaff"|All-Star Game |- | 55 | February 19 | @ Golden State | | Payton Pritchard (26) | Jaylen Brown (15) | Jaylen Brown (13) | Chase Center18,064 | 36–19 |- | 56 | February 22 | @ L.A. Lakers | | Jaylen Brown (32) | Neemias Queta (12) | Pritchard, White (8) | Crypto.com Arena18,997 | 37–19 |- | 57 | February 24 | @ Phoenix | | Derrick White (22) | Neemias Queta (13) | Derrick White (8) | Mortgage Matchup Center17,071 | 38–19 |- | 58 | February 25 | @ Denver | | Jaylen Brown (23) | Jaylen Brown (11) | Payton Pritchard (4) | Ball Arena19,763 | 38–20 |- | 59 | February 27 | Brooklyn | | Brown, Vučević (28) | Nikola Vučević (11) | Jaylen Brown (9) | TD Garden19,156 | 39–20

| 60 | March 1 | Philadelphia | | Brown, Queta (27) | Neemias Queta (17) | Brown, White (8) | TD Garden19,156 | 40–20 |- | 61 | March 2 | @ Milwaukee | | Payton Pritchard (25) | Hugo González (16) | Pritchard, White (9) | Fiserv Forum15,992 | 41–20 |- | 62 | March 4 | Charlotte | | Derrick White (29) | Jaylen Brown (11) | Jaylen Brown (7) | TD Garden19,156 | 41–21 |- | 63 | March 6 | Dallas | | Jaylen Brown (24) | Neemias Queta (15) | Brown, Tatum (7) | TD Garden19,156 | 42–21 |- | 64 | March 8 | @ Cleveland | | Jaylen Brown (23) | Neemias Queta (11) | Jaylen Brown (8) | Rocket Arena19,432 | 43–21 |- | 65 | March 10 | @ San Antonio | | Derrick White (34) | Sam Hauser (7) | Brown, White (7) | Frost Bank Center19,080 | 43–22 |- | 66 | March 12 | @ Oklahoma City | | Jaylen Brown (34) | Neemias Queta (10) | Jaylen Brown (7) | Paycom Center18,203 | 43–23 |- | 67 | March 14 | Washington | | Neemias Queta (24) | Jayson Tatum (14) | Jayson Tatum (7) | TD Garden19,156 | 44–23 |- | 68 | March 16 | Phoenix | | Jaylen Brown (41) | Brown, Tatum (7) | (6) | TD Garden19,156 | 45–23 |- | 69 | March 18 | Golden State | | Jaylen Brown (32) | Jayson Tatum (10) | Payton Pritchard (7) | TD Garden19,156 | 46–23 |- | 70 | March 20 | @ Memphis | | Jaylen Brown (30) | Neemias Queta (11) | Jaylen Brown (6) | FedExForum17,048 | 47–23 |- | 71 | March 22 | Minnesota |