The Collaborative International Dictionary of English v.0.48:

Creator \Cre*a"tor\ (kr[-e]*[=a]"t[~e]r), n. [L. creator: cf. F.
   cr['e]ateur.]
   One who creates, produces, or constitutes. Specifically, the
   Supreme Being.
   [1913 Webster]

         To sin's rebuke and my Creater's praise. --Shak.
   [1913 Webster]

         The poets and artists of Greece, who are at the same
         time its prophets, the creators of its divinities, and
         the revealers of its theological beliefs. --Caird.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Creator
    n 1: terms referring to the Judeo-Christian God [syn: Godhead,
         Lord, Creator, Maker, Divine, God Almighty,
         Almighty, Jehovah]
    2: a person who grows or makes or invents things

Moby Thesaurus II by Grady Ward, 1.0:

82 Moby Thesaurus words for "creator":
   God, actor, agent, ancestors, apprentice, architect, artificer,
   artisan, artist, artiste, author, begetter, beginner, brains,
   builder, catalyst, causer, conceiver, constructor, copyist,
   craftsman, dauber, daubster, designer, deviser, discoverer, doer,
   effector, engenderer, engineer, executant, executor, executrix,
   fabricator, father, founder, framer, generator, grower,
   inaugurator, industrialist, initiator, inspirer, instigator,
   institutor, introducer, inventor, journeyman, maker, manufacturer,
   master, master craftsman, mastermind, medium, mother, mover,
   old master, operant, operative, operator, organizer, originator,
   parent, past master, patriarch, performer, perpetrator, planner,
   practitioner, precursor, prime mover, primum mobile, producer,
   raiser, realizer, shaper, sire, smith, subject, the Deity, worker,
   wright