One who has granted an option to another.

The seller of a property who extends an option to someone else. If the optionee exercises the option, this person is legally bound by the contractual obligations. If the option is not exercised then the optionor is released from any responsibilities.

One who grants the "Option" for compensation.

Patent

Person or business that gives or sells an option.

The party who has sold the option to sell real property.

The person who gives an option.