United States: The United States has several populations of free-roaming wild horses, including the mustangs of the American West, the wild horses of Assateague Island on the East Coast, and the Colonial Spanish horses in the Southeast.

Canada: In Canada, you can find free-roaming wild horses in the foothills of the Rocky Mountains in Alberta and in the Chilcotin plateau of British Columbia.

Australia: Australia is home to the Brumbies, a population of wild horses that roam the country's interior, particularly in the Australian Alps and the Northern Territory.

Mongolia: The Takhi or Przewalski's horse is a species of wild horse that is native to Mongolia. The Takhi was once extinct in the wild, but reintroduction efforts have led to a small but growing population of free-roaming Takhi in the country.

Iceland: Iceland is home to a population of wild horses, known as Icelandic horses or ponies, that roam the country's rugged terrain.

Spain: The Camargue horses of Spain are a population of semi-wild horses that live in the Camargue region of southern France and parts of Spain.

Poland: Poland is home to a population of wild horses known as the Konik, which roam the Biebrza and Narew National Parks.

 Kazakhstan: Kazakhstan is home to a population of wild horses known as the Kulan, which roam the country's steppes.

Namibia: The Namib Desert is home to a population of wild horses believed to have been abandoned by German settlers in the early 20th century.

New Zealand: The Kaimanawa horses of New Zealand are a population of wild horses that live in the Kaimanawa Ranges on the country's North Island.

England:  The New Forest Pony, which is a breed of pony that is believed to be descended from horses brought to the area by the Normans in the 11th century. These ponies live in the New Forest National Park in southern England and roam freely throughout the area. The Dartmoor Pony, a breed of pony native to the Dartmoor region of southwestern England. These ponies have lived in the area for thousands of years and are managed by local farmers and conservation organizations. There are also small populations of wild horses in other parts of England, such as the Exmoor Pony in the Exmoor National Park, and the Chincoteague Pony, which was introduced to the UK from the United States and can be found on the Somerset Levels.