North America:
* Canada: Most of Canada, except for the far north and some southern regions.
* United States: Parts of the northern and western US, including Alaska, Minnesota, Montana, Wyoming, Idaho, Washington, Oregon, and California.
Europe:
* Scandinavia: Sweden, Finland, Norway, and parts of Russia.
* Eastern Europe: Belarus, Poland, Romania, Slovakia, and parts of Russia.
* Western Europe: Germany, France, Italy, and Spain.
Asia:
* Russia: Most of Russia, including Siberia, the Caucasus, and the Ural Mountains.
* Central Asia: Kazakhstan, Mongolia, and parts of China.
Specific regions within these areas may vary depending on the time of year and the specific population of gray wolves being considered.