WordNet (r) 3.0 (2006):

con artist
    n 1: a swindler who exploits the confidence of his victim [syn:
         confidence man, con man, con artist]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "con artist":
   bunco artist, bunco steerer, cardsharp, cardsharper, carpetbagger,
   con man, confidence man, crimp, horse coper, horse trader, jackleg,
   land pirate, land shark, land-grabber, mortgage shark, pettifogger,
   pitchman, shark, sharp, sharper, sharpie, shortchanger, shyster,
   slicker, spieler