Was heißt »Anbieterin« auf Englisch?

Das Substantiv Anbieterin lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Männliche Wortform

The chef is phoning a supplier.
Mary wanted to use the gift token the telephone company had given her, but the item she wanted was out of stock; she had to leave, heavy-hearted and empty-handed. Disappointed beyond measure, she changed her provider.
I'm the supplier of my customers, and the customer of my suppliers.
A service provider tenders its services to firms.
A service provider offers its services to businesses.
The company has a contract with the supplier.
Every Internet access provider must understand these regulations.
Needless to say, Norway has become the world's second largest oil supplier.