public speaker

from WordNet (r) 3.0 (2006)

public speaker
    n 1: a person who delivers a speech or oration [syn: {orator},
         {speechmaker}, {rhetorician}, {public speaker},
         {speechifier}]

from Moby Thesaurus II by Grady Ward, 1.0

30 Moby Thesaurus words for "public speaker":
      Cicero, Demosthenes, William Jennings Bryan, Winston Churchill,
      debater, declaimer, demagogue, haranguer, jawsmith, orator,
      panelist, platform orator, rabble-rouser, ranter, rhetor,
      rhetorician, soapbox orator, soapboxer, speaker, speecher,
      speechifier, speechmaker, spellbinder, spieler, spokesman,
      spokeswoman, spouter, stump orator, talker, tub-thumper