Owlmaster

Owlmaster was a wizarding company that sold tickets to concerts. An ad for a Spellbound tour put up inside the Knight Bus in 1993 stated that tickets were available at the Owlmaster office.

Etymology
The name of this company is presumably a play on Ticketmaster, a ticket sales and distribution company which operates in many countries around the world, including Great Britain.

Appearances

 * Harry Potter and the Prisoner of Azkaban (film)