The Collaborative International Dictionary of English v.0.48:

Pragmatist \Prag"ma*tist\, n.
   One who is pragmatic.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pragmatist
    n 1: an adherent of philosophical pragmatism
    2: a person who takes a practical approach to problems and is
       concerned primarily with the success or failure of her
       actions