The Collaborative International Dictionary of English v.0.48:

Presenter \Pre*sent"er\, n.
   One who presents.
   [1913 Webster]

WordNet (r) 3.0 (2006):

presenter
    n 1: someone who presents a message of some sort (as a petition
         or an address or a check or a memorial etc.)
    2: an advocate who presents a person (as for an award or a
       degree or an introduction etc.) [syn: presenter, sponsor]
    3: person who makes a gift of property [syn: donor, giver,
       presenter, bestower, conferrer]