Burley is a city in Cassia County, with a small portion extending north across the Snake River into neighboring Minidoka County, in the southern portion of the U.S. state of Idaho. The population was 9,316 at the 2000 census. The city is the county seat of Cassia County^GR6.

Burley is the second-largest city in Idaho's Magic Valley region after Twin Falls. Along with nearby Rupert it forms the bulk of the "Mini-Cassia" area of southern Idaho.

Burley is the principal city of the Burley, ID Micropolitan Statistical Area, which includes Cassia and Minidoka Counties.