Malaysia A1 Semi-Pro League

The Malaysia A1 Semi-Pro League (Liga A1 Semi-Pro Malaysia, previously known as the Malaysia M3 League, currently known as the MBSB Bank Championship due to sponsorship reasons) is the second level football league of the Malaysian football league system. The league was created as part of the Malaysian Football League's plan to reform the domestic league structure, and replacement of the former Malaysia FAM League.

History
In 2018, the Malaysia M3 League was supposed to form the fourth division of the Malaysian football league system. However, after the Football Association of Malaysia confirmed a reform of the Malaysia FAM League to return to a knockout competition format, the league was announced as a replacement for the Malaysia FAM League to form the de facto third division of the Malaysian football league system.

After a rebranding of the Football Malaysia Limited Liability Partnership (FMLLP) to the Malaysian Football League (MFL) in March 2018, the company announced a reform of the lower league competitions in Malaysia. In 2019, a new subsidiary of the company was formed, known as the Amateur Football League (AFL) which was tasked to manage the new third division and below. The AFL officially confirmed the formation of the Malaysia M3 League and the Malaysia M4 League as the third and fourth divisions of the Malaysian football league system.

A total of 14 clubs were confirmed to compete in the inaugural season of the newly reformed third division, with the Malaysia M3 League replacing the former Malaysia FAM League. Qualified champions from the 5 FA State leagues and 9 Social leagues in 2018 were promoted to the inaugural 2019 Malaysia M3 League season.

For the 2020 season, the Malaysia M3 League was divided into two groups of 10 teams. At the end of the season, the top team from each group was promoted to the Malaysia Premier League. This however did not happen because of the cancellation of the 2020 season due to the COVID-19 pandemic, and was declared null and void.

For the 2021 season, the AFL announced format changes for the Malaysia M3 League and Malaysia M4 League in preparation for more participating teams to become professional by 2022. However, due to the pandemic, AFL postponed the start of the season to late 2021, before cancelling it altogether.

Season
The following 14 clubs contested the league in its inaugural season, including the 3 clubs from the 2018 Malaysia FAM League. 10 clubs were promoted from the 2018 Malaysia M4 League (previously known as the Malaysia M5 League). 4 clubs have withdrawn from the competition and 1 club was invited by the organizer to participate in the competition which were Tun Razak City F.C.

 Note :

1)Third-tier also represents the previous third-tier in the Malaysian football league system which was the Malaysia FAM League (2008–2018)

2)Batu Dua changed their name to Harini F.C.

Other clubs
The following clubs are not competing in the Malaysia M3 League during the 2019 season, but competed in the third-tier or Malaysia M3 League for at least one season.

 Note : Third-tier also represents the previous third-tier in the Malaysian football league system which was the Malaysia FAM League (2008–2018)

Golden Boot winners
Below is the list of golden boot winners of the league since its inception in 2019.