The Collaborative International Dictionary of English v.0.48:

map maker \map" mak*er\, mapmaker \map"mak*er\n.
   A person who makes maps; a cartographer.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

map maker
    n 1: a person who makes maps [syn: cartographer, map maker]

Moby Thesaurus II by Grady Ward, 1.0:

62 Moby Thesaurus words for "map maker":
   Lambert conformal projection, Mercator projection,
   Miller projection, aeronautical chart, astronomical chart, atlas,
   azimuthal equidistant projection, azimuthal projection,
   cartographer, cartography, celestial chart, celestial globe, chart,
   chorographer, chorography, climatic chart, conic projection,
   contour line, contour map, cylindrical projection,
   general reference map, globe, gnomonic projection, graphic scale,
   grid line, hachure, heliographic chart, hydrographic chart, index,
   isoline, latitude, layer tint, legend, longitude, map,
   map projection, mapper, meridian, parallel, photogrammetrist,
   photogrammetry, photomap, phototopography, physical map,
   political map, polyconic projection, projection, relief map,
   representative fraction, road map, scale, sinusoidal projection,
   special map, terrain map, terrestrial globe, thematic map,
   topographer, topographic chart, topography, transportation map,
   weather chart, weather map