Please tell me the opposite word of Franchise..

I mean, Franchise is "a privilege of a public nature conferred on company” but how to call the main company's section?
Retail? Headquarters??

sorry for my poor eglish, but please somebody help me:(
Do you mean the company that gives the franchise? If so, then it is called franchiser.

You can refer to it as Parent Company.

P.S. This might not be the exact opposite for franchise.