It's Harry Potter Week, so all my lists this week will be related to the Harry Potter books.
Ten Quidditch teams:
- Puddlemere United
- Braga Broomfleet
- Moutohora Macaws
- Stonewall Stormers
- Kenmare Kestrels
- Grodzisk Goblins
- Sumbawanga Sunrays
- Haileybury Hammers
- Chudley Cannons
- Quiberon Quafflepunchers
Most of the teams named here are mentioned only in Quidditch Through the Ages, but those books were written by J. K. Rowling, so they're canonical.