From Longman Business Dictionarygrantorgran‧tor /ˌgrɑːnˈtɔː, ˈgrɑːntəˈgræntər, -tɔːr/ noun [countable]1LAW a person who gives their legal ownership of land, property, or money to someone else2a person or company that allows someone to have somethingAT&T is the first big credit grantor to respond to complaints that consumers have difficulty obtaining their credit reports.