* United States: Rainbow trout are found in many rivers and streams in the United States, including the Rocky Mountains, the Sierra Nevada, and the Great Lakes region.
* Canada: Rainbow trout are found in many rivers and streams in Canada, including the Yukon River, the Fraser River, and the Great Lakes region.
2. Europe
* United Kingdom: Rainbow trout are found in many rivers and streams in the United Kingdom, including the River Thames, the River Severn, and the River Wye.
* France: Rainbow trout are found in many rivers and streams in France, including the River Seine, the River Loire, and the River Rhône.
* Germany: Rainbow trout are found in many rivers and streams in Germany, including the River Rhine, the River Elbe, and the River Danube.
3. Asia
* Japan: Rainbow trout are found in many rivers and streams in Japan, including the Tone River, the Chikuma River, and the Mogami River.
* China: Rainbow trout are found in many rivers and streams in China, including the Yangtze River, the Yellow River, and the Pearl River.
* Mongolia: Rainbow trout are found in many rivers and streams in Mongolia, including the Selenge River, the Orkhon River, and the Khalkhyn Gol River.
4. Oceania
* Australia: Rainbow trout are found in many rivers and streams in Australia, including the Snowy River, the Murray River, and the Darling River.
* New Zealand: Rainbow trout are found in many rivers and streams in New Zealand, including the Clutha River, the Waikato River, and the Wanganui River.
5. South America
* Chile: Rainbow trout are found in many rivers and streams in Chile, including the Biobío River, the Valdivia River, and the Maule River.
* Argentina: Rainbow trout are found in many rivers and streams in Argentina, including the Río Negro, the Río Limay, and the Río Chubut.
* Brazil: Rainbow trout are found in many rivers and streams in Brazil, including the Rio Paraná, the Rio São Francisco, and the Rio Doce.