wholesaler

from WordNet (r) 3.0 (2006)

wholesaler
    n 1: someone who buys large quantities of goods and resells to
         merchants rather than to the ultimate customers [syn:
         {jobber}, {middleman}, {wholesaler}]

from Moby Thesaurus II by Grady Ward, 1.0

32 Moby Thesaurus words for "wholesaler":
      agent, broker, chandler, connection, dealer, distributor,
      go-between, importer, intermediary, intermedium, jobber, liaison,
      link, marketer, mediary, mediator, medium, merchandiser, merchant,
      middleman, monger, regrater, retail dealer, retail merchant,
      retailer, shopkeeper, storekeeper, tie, trader, tradesman,
      tradeswoman, trafficker