Acridotheres tristis, commonly known as the Common Myna, is native to South Asia, including India, Pakistan, Bangladesh, and Sri Lanka. It is also found in some parts of Asia, including Myanmar and the southwestern part of China.

The Common Myna thrives in a wide range of environmental conditions. It is typically found in urban and suburban areas but also inhabits agricultural lands, grasslands, and open woodlands. This species is highly adaptable and often takes advantage of human-altered landscapes.

The Common Myna occupies an ecological niche as an omnivore and scavenger, feeding on insects, fruits, and food waste in urban environments. It has adapted well to various human-dominated ecosystems, often competing with native bird species for resources.