The qualifiers for Marble League 2021 will take place on 18 June 2021. The qualifying system changed from the previous year, and instead of 20 teams, 24 teams will enter the qualifiers in two groups of twelve to claim participation spots in the main tournament, but only 12 of them will make it through alongside the four auto-qualified teams from Marble League 2020.
The Turtle Sliders, Snowballs, and Limers were originally ineligible to participate the ML2021 Qualifiers or the ML2021 main event because they were the bottom four of Marble League Showdown 2020. However, due to changes in the qualifying format, and the retirements of the Jawbreakers and Hornets, these three teams will compete in the ML2021 Qualifiers.
On April 13th, 2021, it was announced that the Gliding Glaciers would return to the Marble League and take the place of the Jawbreakers. Additionally, it was announced that a new team, the Solar Flares, would take the place of the Hornets in the Qualifiers after the Bumblebees' takeover of the Hornets.
|Teams||Method of Qualification|
|Midnight Wisps||Marble League 2020 4th Place|
|Hazers||Marble League 2020 6th Place|
|Team Galactic||Marble League 2020 7th Place|
|Team Momo||Marble League 2020 8th Place|
|Raspberry Racers||Marble League 2020 9th Place|
|Oceanics||Marble League 2020 10th Place|
|Bumblebees||Marble League 2020 11th Place|
|Green Ducks||Marble League 2020 12th Place|
|Thunderbolts||Marble League 2020 13th Place|
|Mellow Yellow||Marble League 2020 14th Place|
|Balls of Chaos||Marble League 2020 15th Place|
|Gliding Glaciers*||Invitation (Came out of Retirement)|
|Kobalts||Marble League Showdown 2020 1st Place|
|Jungle Jumpers||Marble League Showdown 2020 2nd Place|
|Chocolatiers||Marble League Showdown 2020 3rd Place|
|Shining Swarm||Marble League Showdown 2020 4th Place|
|Pinkies||Marble League Showdown 2020 5th Place|
|Indigo Stars||Marble League Showdown 2020 6th Place|
|Team Primary||Marble League Showdown 2020 7th Place|
|Rojo Rollers||Marble League Showdown 2020 8th Place|
|Turtle Sliders||Marble League Showdown 2020 9th Place|
|Snowballs||Marble League Showdown 2020 10th Place|
|Limers||Marble League Showdown 2020 11th Place|
All 24 teams hoping to qualify for Marble League 2021 were randomly placed into two groups, Group A and Group B, with one team per group being revealed between June 6th and June 17th 2021 on the JMR Subreddit. On June 8th however, a promotion video on the JMR Twitter revealed the 24 teams' placement in groups, resulting in a premature release of the qualifying groups in Marble League 2021.
|TBD||Wave||18 June 2021||TBD|
- JellesMarbleRuns (13th April 2020). How will the 2021 league qualifiers work?. Reddit.