League

• USA
• Minnesota Roller Derby

The blue lightning bolt is the symbol for Minnesota Roller Derby.

• USA
• Minnesota Roller Derby

• USA
• Minnesota Roller Derby

Minnesota RollerGirls is currently known as Minnesota Roller Derby.

• USA
• Minnesota Roller Derby

The All-Stars are the charter team of Minnesota RollerGirls.  Minnesota RollerGirls is currently known as Minnesota Roller Derby.

• USA
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• Minnesota Roller Derby

The Atomic Bombshells are a Minnesota RollerGirls home team.  Minnesota RollerGirls is currently known as Minnesota Roller Derby.

• USA
• Minnesota Roller Derby

The Garda Belts are a Minnesota RollerGirls home team. Minnesota RollerGirls is currently known as Minnesota Roller Derby.

• USA
• Minnesota Roller Derby

Minnesota RollerGirls is currently known as Minnesota Roller Derby.

• USA
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• Minnesota Roller Derby

Minnesota RollerGirls is currently known as Minnesota Roller Derby.

• USA
• Minnesota Roller Derby

Minnesota RollerGirls is currently known as Minnesota Roller Derby.

• USA
• Minor Threat Junior Roller Derby

Minor Threat Junior Roller Derby (St. Louis, Missouri) should not be confused with Minor Threat Junior Roller Derby of Las Cruces, New Mexco which disbanded in 2014. Fortunately for our listings I haven't discovered any patches from the earlier league.

• USA
• Mission City Roller Derby

The Brawlin' Betties are the charter team of Mission City Roller Derby.

• USA
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• Mississippi Brawl Stars

• USA
• Mississippi Valley Mayhem

Contrary to what you might believe, the Mississippi Valley Mayhem are located in Wisconsin, not Mississippi.

• USA
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• Mobile's Derby Darlings

• Belgium
• Mol Roller Derby

The Red Hot Cherry Bombs are the A-team of Mol Roller Derby.

• USA
• Monadnock Roller Derby

• USA
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• Montgomery Roller Derby

• Canada
• Montreal Roller Derby

• Canada
• Montreal Roller Derby

New Skids on the Block is the A-team of Montreal Roller Derby.

• USA
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• Morgantown Roller Vixens

• USA
• Back Patch
• Morgantown Roller Vixens

• USA
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• Morgantown Roller Vixens

Morgantown Foxfire is the B-team of Morgantown Roller Vixens.

• Canada
• Muddy River Rollers

• Germany
• Munich Rolling Rebels

• Germany
• Munich Rolling Rebels

Munich Dynamite is the charter team for Munich Rolling Rebels.

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• Germany
• Munich Rolling Rebels

The Municorns are the B-team of Munich Rolling Rebels.

• Germany
• Munich Rolling Rebels
• Anniversary

• Australia
• Murder City Roller Girls

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• Australia
• Murder City Roller Girls

• Australia
• Murder City Roller Girls

The Vigilantes are one of Murder City Roller Girls' home teams.