In many fantasy worlds, the cold mountain or tundra areas will be on the north of the map. In those same worlds, the south of the map will be deserts, jungles, or tropical islands. If that's so, than there is a Northern Hemisphere Fantasy Map!
The prevalence of Northern Hemisphere Fantasy Maps might be because the Northern Hemisphere has America, Japan, and Europe, where many fantasies originate. Others are not from the Northern Hemisphere, but have world based on the Northern Hemisphere.