The Atlantic Division is one of the three divisions in the Eastern Conference of the National Basketball Association (NBA). The division consists of five teams, the Boston Celtics, the Brooklyn Nets, the New York Knicks, the Philadelphia 76ers, and the Toronto Raptors. All teams, except the Raptors, are located on the East Coast of the United States. However, Toronto sports teams have over the years enjoyed rivalries with teams in the Northeastern United States (particularly, Toronto teams also share divisions with Boston and New York teams in Major League Baseball and the National Hockey League).

The division was created at the start of the 1970–71 season, when the league expanded from 14 to 17 teams with the addition of the Buffalo Braves, the Cleveland Cavaliers and the Portland Trail Blazers. The league realigned itself into two conferences, the Western Conference and the Eastern Conference, with two divisions in each conference. The Atlantic Division began with four inaugural members, the Celtics, the Braves, the Knicks and the 76ers. The Celtics, the Knicks and the 76ers all joined from the Eastern Division.

The Celtics have won the most Atlantic Division titles with 26. Twelve NBA champions have come from the Atlantic Division. The Celtics have won seven NBA championships while in the Division, while the Knicks have won three championships, and the 76ers and the Raptors have won one championship each. All of them, except the 1972–73 and 2025–26 Knicks, were division champions. In the 1983–84 season, all five teams from the division qualified for the playoffs. In the 1982–83 season, all teams in the division had winning percentages above 0.500 (50%).

Since the 2021–22 season, the Atlantic Division champion has received the Nat "Sweetwater" Clifton Trophy, named after Hall of Famer Nathaniel Clifton.

2025–26 standings

Notes y – Clinched division title x – Clinched playoff spot

Teams Team City Year From Joined Boston Celtics Boston, Massachusetts Eastern Division Brooklyn Nets (–present)New Jersey Nets (–)New York Nets (–) Brooklyn, New YorkPiscataway/East Rutherford/Newark, New JerseyUniondale, New York ABA New York Knicks New York City, New York Eastern Division Philadelphia 76ers Philadelphia, Pennsylvania Eastern Division Toronto Raptors Toronto, Ontario Central Division Notes denotes a team that merged from the American Basketball Association (ABA).

Former teams Team City Year From Year To Current division Joined Left Buffalo Braves (now the Los Angeles Clippers) Buffalo, New York — Pacific Division(as San Diego Clippers) Pacific Division Charlotte Hornets Charlotte, North Carolina — Midwest Division Southeast Division Miami Heat Miami, Florida Midwest Division Southeast Division Southeast Division Orlando Magic Orlando, Florida Midwest Division Southeast Division Southeast Division Washington Wizards (–present)Washington Bullets (–) Washington, D.C. Central Division Southeast Division Southeast Division Notes denotes an expansion team.

Team Timeline Denotes team that is currently in the division Denotes team that has left the division

Nat "Sweetwater" Clifton Trophy Beginning with the 2021–22 season, the Atlantic Division champion has received the Nat "Sweetwater" Clifton Trophy. As with the other division championship trophies, it is named after one of the African American pioneers from NBA history. Nathaniel Clifton was one of the first African American players to sign an NBA contract when he joined the New York Knicks in 1950. The Clifton Trophy consists of a crystal ball.

Division champions ^ Had or tied for the best regular season record for that season Season Team Record Playoffs result New York Knicks 52–30 (.634) Lost conference finals Boston Celtics 56–26 (.683) Lost conference finals Boston Celtics^ 68–14 (.829) Lost conference finals Boston Celtics 56–26 (.683) Won NBA Finals Boston Celtics^ 60–22 (.732) Lost conference finals Boston Celtics 54–28 (.659) Won NBA Finals Philadelphia 76ers 50–32 (.610) Lost NBA Finals Philadelphia 76ers 55–27 (.671) Lost conference finals Washington Bullets^ 54–28 (.659) Lost NBA Finals Boston Celtics^ 61–21 (.744) Lost conference finals Boston Celtics^ 62–20 (.756) Won NBA Finals Boston Celtics^ 63–19 (.768) Lost conference finals Philadelphia 76ers^ 65–17 (.793) Won NBA Finals Boston Celtics^ 62–20 (.756) Won NBA Finals Boston Celtics^ 63–19 (.768) Lost NBA Finals Boston Celtics^ 67–15 (.817) Won NBA Finals Boston Celtics 59–23 (.720) Lost NBA Finals Boston Celtics 57–25 (.695) Lost conference finals New York Knicks 52–30 (.634) Lost conference semifinals Philadelphia 76ers 53–29 (.646) Lost conference semifinals Boston Celtics 56–26 (.683) Lost conference semifinals Boston Celtics 51–31 (.622) Lost conference semifinals New York Knicks 60–22 (.732) Lost conference finals New York Knicks 57–25 (.695) Lost NBA Finals Orlando Magic 57–25 (.695) Lost NBA Finals Orlando Magic 60–22 (.732) Lost conference finals Miami Heat 61–21 (.744) Lost conference finals Miami Heat 55–27 (.671) Lost first round Miami Heat 33–17 (.660) Lost first round Miami Heat 52–30 (.634) Lost conference semifinals Philadelphia 76ers 56–26 (.683) Lost NBA Finals New Jersey Nets 52–30 (.634) Lost NBA Finals New Jersey Nets 49–33 (.598) Lost NBA Finals New Jersey Nets 47–35 (.573) Lost conference semifinals Boston Celtics 45–37 (.549) Lost first round New Jersey Nets 49–33 (.598) Lost conference semifinals Toronto Raptors 47–35 (.573) Lost first round Boston Celtics^ 66–16 (.805) Won NBA Finals Boston Celtics 62–20 (.756) Lost conference semifinals Boston Celtics 50–32 (.610) Lost NBA Finals Boston Celtics 56–26 (.683) Lost conference semifinals Boston Celtics 39–27 (.591) Lost conference finals New York Knicks 54–28 (.659) Lost conference semifinals Toronto Raptors 48–34 (.585) Lost first round Toronto Raptors 49–33 (.598) Lost first round Toronto Raptors 56–26 (.683) Lost conference finals Boston Celtics 53–29 (.646) Lost conference finals Toronto Raptors 59–23 (.720) Lost conference semifinals Toronto Raptors 58–24 (.707) Won NBA Finals Toronto Raptors 53–19 (.736) Lost conference semifinals Philadelphia 76ers 49–23 (.681) Lost conference semifinals Boston Celtics 51–31 (.622) Lost NBA Finals Boston Celtics 57–25 (.695) Lost conference finals Boston Celtics^ 64–18 (.780) Won NBA Finals Boston Celtics 61–21 (.744) Lost conference semifinals Boston Celtics 56–26 (.683) Lost first round

Titles by team ^ Denotes team that has left the division Team Titles Season(s) won Boston Celtics 27 , , , , , , , , , , , , , , , , , , , , , , , , , , Toronto Raptors 7 , , , , , , Philadelphia 76ers 6 , , , , , New York Knicks 5 , , , , Brooklyn Nets 4 , , , Miami Heat^ 4 , , , Orlando Magic^ 2 , Washington Bullets^ (now Washington Wizards) 1

Season results ^ Denotes team that won the NBA Finals + Denotes team that won the Conference finals, but lost the NBA Finals * Denotes team that qualified for the NBA Playoffs × Denotes team that qualified for the NBA play-in tournament † Denotes team that did not qualify for the 2020 NBA Bubble season restart Season Team (record) 1st 2nd 3rd 4th 5th 6th 7th 1970: The Atlantic Division was formed with four inaugural members. An expansion team, the Buffalo Braves, joined the division. The Boston Celtics, the New York Knicks and the Philadelphia 76ers joined from the Eastern Division. New York* (52–30) Philadelphia* (47–35) Boston (44–38) Buffalo (22–60) Boston* (56–26) New York+ (48–34) Philadelphia (30–52) Buffalo (22–60) Boston* (68–14) New York^ (57–25) Buffalo (21–61) Philadelphia (9–73) Boston^ (56–26) New York* (49–33) Buffalo* (42–40) Philadelphia (25–57) Boston* (60–22) Buffalo* (49–33) New York* (40–42) Philadelphia (34–48) Boston^ (54–28) Philadelphia* (46–36) Buffalo* (46–36) New York (38–44) 1976: An American Basketball Association (ABA) team that merged with the NBA, the New York Nets, joined the division. Philadelphia+ (50–32) Boston* (44–38) NY Knicks (40–42) Buffalo (30–52) NY Nets (22–60) 1977: The New York Nets relocated and became the New Jersey Nets. Philadelphia* (55–27) New York* (43–39) Boston (32–50) Buffalo (27–55) New Jersey (24–58) 1978: The Washington Bullets joined from the Central Division. The Buffalo Braves, who relocated and became the San Diego Clippers, left to join the Pacific Division. Washington+ (54–28) Philadelphia* (47–35) New Jersey* (37–45) New York (31–51) Boston (29–53) Boston* (61–21) Philadelphia+ (59–23) Washington* (39–43) New York (39–43) New Jersey (34–48) Boston^ (62–20) Philadelphia* (62–20) New York* (50–32) Washington (39–43) New Jersey (24–58) Boston* (63–19) Philadelphia+ (58–24) New Jersey* (44–38) Washington* (43–39) New York (33–49) Philadelphia^ (65–17) Boston* (56–26) New Jersey* (49–33) New York* (44–38) Washington (42–40) Boston^ (62–20) Philadelphia* (52–30) New York* (47–35) New Jersey* (45–37) Washington* (35–47) Boston+ (63–19) Philadelphia* (58–24) New Jersey* (42–40) Washington* (40–42) New York (24–58) Boston^ (67–15) Philadelphia* (54–28) Washington* (39–43) New Jersey* (39–43) New York (23–59) Boston+ (59–23) Philadelphia* (45–37) Washington* (42–40) New Jersey (24–58) New York (24–58) Boston* (57–25) Washington* (38–44) New York* (38–44) Philadelphia (36–46) New Jersey (19–63) 1988: An expansion team, the Charlotte Hornets, joined the division temporarily for one season. New York* (52–30) Philadelphia* (46–36) Boston* (42–40) Washington (40–42) New Jersey (26–56) Charlotte (20–62) 1989: The Miami Heat joined from the Midwest Division. The Charlotte Hornets left to join the Midwest Division temporarily for one season, then the Central Division permanently thereafter. Philadelphia* (53–29) Boston* (52–30) New York* (45–37) Washington (31–51) Miami (18–64) New Jersey (17–65) Boston* (56–26) Philadelphia* (44–38) New York* (39–43) Washington (30–52) New Jersey (26–56) Miami (24–58) 1991: The Orlando Magic joined from the Midwest Division. Boston* (51–31) New York* (51–31) New Jersey* (40–42) Miami* (38–44) Philadelphia (35–47) Washington (25–57) Orlando (21–61) New York* (60–22) Boston* (48–34) New Jersey* (43–39) Orlando (41–41) Miami (36–46) Philadelphia (26–56) Washington (22–60) New York+ (57–25) Orlando* (50–32) New Jersey* (45–37) Miami* (42–40) Boston (32–50) Philadelphia (25–57) Washington (24–58) Orlando+ (57–25) New York* (55–27) Boston* (35–47) Miami (32–50) New Jersey (30–52) Philadelphia (24–58) Washington (21–61) Orlando* (60–22) New York* (47–35) Miami* (42–40) Washington (39–43) Boston (33–49) New Jersey (30–52) Philadelphia (18–64) Miami* (61–21) New York* (57–25) Orlando* (45–37) Washington* (44–38) New Jersey (26–56) Philadelphia (22–60) Boston (15–67) 1997: The Washington Bullets was renamed the Washington Wizards. Miami* (55–27) New York* (43–39) New Jersey* (43–39) Washington (42–40) Orlando (41–41) Boston (36–46) Philadelphia (31–51) Miami* (33–17) Orlando* (33–17) Philadelphia* (28–22) New York+ (27–23) Boston (19–31) Washington (18–32) New Jersey (16–34) Miami* (52–30) New York* (50–32) Philadelphia* (49–33) Orlando (41–41) Boston (35–47) New Jersey (31–51) Washington (29–53) Philadelphia+ (56–26) Miami* (50–32) New York* (48–34) Orlando* (43–39) Boston (36–46) New Jersey (26–56) Washington (19–63) New Jersey+ (52–30) Boston* (49–33) Orlando* (44–38) Philadelphia* (43–39) Washington (37–45) Miami (36–46) New York (30–52) New Jersey+ (49–33) Philadelphia* (48–34) Boston* (44–38) Orlando* (42–40) Washington (37–45) New York (37–45) Miami (25–57) New Jersey* (47–35) Miami* (42–40) New York* (39–43) Boston* (36–46) Philadelphia (33–49) Washington (25–57) Orlando (21–61)