| Hong Kong A1 Division Championship (HKA1) | |
| Pixels: | 100px |
| Sport: | Basketball |
| Owner: | Hong Kong Basketball Association |
| Founded: | 1954 |
| Inaugural: | 1954–55 |
| Teams: | 10 |
| Countries: | Hong Kong |
| Continent: | FIBA Asia (Asia) |
| Champion: | Hong Kong Eastern (2nd title) |
| Champ Season: | 2023–24 |
| Most Champs: | South China (16 titles) |
| Confed Cup: | Basketball Champions League Asia |
| Website: | HKBA |
Hong Kong A1 Division Championship, abbreviated as HKA1 and A1 Division, is the top division of men's basketball league in Hong Kong. The league was founded in 1954 and the inaugural season was held the same year. Currently, ten teams make up the league.
South China is the most successful team in league history with 16 titles.
Since 2021, the season is usually held between September and April, with offseason taking place from May to August. To make the league more entertaining, a play-off system was adopted in 2005 and an all-star game was held in the middle of the season.
A total of ten teams contested in the 2021 season:[1]
| Edition | Year(s) | Champion | |
|---|---|---|---|
| 1 | 1954–55 | South China (1) | |
| 2 | 1955–56 | Self-Strength (1) | |
| 3 | 1956–57 | Eastern (1) | |
| 4 | 1957–58 | South China (2) | |
| 5 | 1958–59 | Pei Er (1) | |
| 6 | 1959–60 | South China (3) | |
| 7 | 1977 | Kung Ngam (1) | |
| 8 | 1978 | Police (1) | |
| 9 | 1979 | Police (2) | |
| 10 | 1980 | Kung Ngam (2) | |
| 11 | 1981 | Kung Ngam (3) | |
| 12 | 1982 | Kung Ngam (4) | |
| 13 | 1983 | Si Yuan (1) | |
| 14 | 1984 | South China (4) | |
| 15 | 1985 | South China (5) | |
| 16 | 1986 | South China (6) | |
| 17 | 1987 | Police (3) | |
| 18 | 1988 | Fukien (1) | |
| 19 | 1989 | Si Yuan (2) | |
| 20 | 1990 | Si Yuan (3) | |
| 21 | 1991 | Fukien (2) | |
| 22 | 1992 | Winling (1) | |
| 23 | 1993 | Si Yuan (4) | |
| 24 | 1994 | Winling (2) | |
| 25 | 1995 | Winling (3) | |
| 26 | 1996 | Winling (4) | |
| 27 | 1997 | Winling (5) | |
| 28 | 1998 | Winling (6) | |
| 29 | 1999 | Winling (7) | |
| 30 | 2000 | Winling (8) | |
| 31 | 2001 | Winling (9) | |
| 32 | 2002 | Winling (10) | |
| 33 | 2003 | Fukien (3) | |
| 34 | 2004 | South China (7) | |
| 35 | 2005 | South China (8) | |
| 36 | 2006 | Winling (11) | |
| 37 | 2007 | Winling (12) | |
| 38 | 2008 | South China (9) | |
| 39 | 2009 | Winling (13) | |
| 40 | 2010 | Winling (14) | |
| 41 | 2010–11 | Winling (15) | |
| 42 | 2011–12 | South China (10) | |
| 43 | 2012–13 | South China (11) | |
| 44 | 2013–14 | Winling (16) | |
| 45 | 2014–15 | Winling (17) | |
| 46 | 2015–16 | South China (12) | |
| 47 | 2016–17 | South China (13) | |
| 48 | 2017–18 | Eastern (2) | |
| 49 | 2018–19 | South China (14) | |
| align="center" | 2019–20 | ||
| 50 | 2020–21 | South China (15) | |
| 51[2] | 2021–22 | South China (16) | |
| 2022–23 | |||
| 53[3] | 2023–24 | Eastern (3) |