Pine trees can be found as native plants throughout most of the Northern Hemisphere; the only places they aren't found are at altitudes and latitudes above the timber line and in deserts (the Sumatran pine is found in rain forests along the Equator).

http://www.mobot.org/MOBOT/Research/APweb//maps/Pinaceae.gif

Pines are grown worldwide as a timber resource and have become an invasive species in places such as New Zealand, where Monterey pines make up over 90% of all commercial forests and "wilding" trees are outcompeting native plant species (this same species of pine is increasingly threatened in its native habitat by a fungus which is itself an introduced species).
Source(s):
http://en.wikipedia.org/wiki/Pine#Distribution
http://www.mobot.org/MOBOT/Research/APweb//orders/conifers.html
http://www.absoluteastronomy.com/topics/Monterey_Pine#encyclopedia


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