1. (n.) One who gives or bestows; a benefactor; as, an organ donor\.

2. (n.) One who grants an estate; in later use, one who confers a power; -- the opposite of donee.

Maecenas Santa Claus almoner almsgiver angel assignor awarder backer benefactor benefactress bestower caterer chandler cheerful giver commissariat commissary conferrer consignor contributor donator fairy godmother feoffor financer funder furnisher giver grantor imparter lady bountiful manciple merchant patron patroness philanthropist presenter provider provisioner purveyor quartermaster retailer settler steward stock clerk storekeeper subscriber sugar daddy supplier supporter sutler testate testator testatrix victualer vivandier vouchsafer