League

• Need better picture
• Spain
• NaFarriors Roller Derby Iruña

• Nantes Derby Girls
• France

The Duchesses are the A-team of Nantes Derby Girls.

• USA
• Naptown Roller Derby

• USA
• Naptown Roller Derby

• USA
• Naptown Roller Derby
• LGBT

The circular skull patches were made in numerous color schemes.

• USA
• Naptown Roller Derby

Naptown Roller Girls is now known as Naptown Roller Derby.

• USA
• Junior Derby
• Nashville Junior Roller Derby

• USA
• Nashville Roller Derby

Nashville Rollergirls is currently known as Nashville Roller Derby.

• USA
• Nashville Roller Derby

Nashville Rollergirls is currently known as Nashville Roller Derby.

• USA
• Nashville Roller Derby

Nashville Rollergirls is currently known as Nashville Roller Derby. 

• USA
• Junior Derby
• New England Skate Riots

The New England Skate Riots are a region-wide junior roller derby team serving all of New England.  

• USA
• Need better picture
• New Hampshire Roller Derby

• UK
• New Town Roller Derby

• USA
• New York Bad Apples

The New York Bad Apples are New York City's pickup team. They have no formal membership or practices times, but instead draw from area leagues.  One never knows who they'll encounter on the track when playing against the Bad Apples.

• USA
• Disbanded
• New York Shock Exchange

• USA
• Back Patch
• New York Shock Exchange

I am uncertain if the entire team had these jacket patches, or if it's unique.

• Newcastle Roller Derby League
• Australia

• UK
• Newcastle Roller Girls

• Canada
• Niagara Junior Roller Derby

Niagara Junior Roller Girls is currently known as Niagara Junior Roller Derby.

• Canada
• Niagara Roller Derby

Niagara Roller Girls is currently known as Niagara Roller Derby.  This patch appears to be print-on-vinyl.  It's surprisingly large for a patch and looks ideal for displaying across the back of one's jacket.

• Canada
• Nickel City Roller Derby

• Need better picture
• Norway
• Nidaros Roller Derby

• USA
• Need better picture
• No Coast Derby Girls

• UK
• Norfolk Roller Derby

As I understand it (and correct me if I'm wrong), the Brawds are the travel team of Norfolk Roller Derby.

• Need better picture
• Sweden
• Norrköping Roller Derby

• UK
• North Devon Roller Derby

• USA
• North East Roller Derby Youth

• USA
• North Georgia Roller Girls

• USA
• Need better picture
• North Star Roller Derby

• USA
• North Star Roller Derby

Banger Sisters is a home team of North Star Roller Derby.