Kuna is a city in Ada County, Idaho, United States. It is part of the Boise City–Nampa, Idaho Metropolitan Statistical Area. The population was 5,382 at the 2000 census, the city has a total area of 2.4 square miles, all of it land; the 2006 Census Bureau estimated population was 11,510.

Kuna is one of the fastest-growing areas in the state, having more than doubled in population since 2000.

Kuna is located at 43° 29' 35"N 116° 25' 8"W / 43.493092, -116.418936. Kuna's business center is approximately 18 miles from Boise, the capital of Idaho.

Kuna originated as a railroad stop with coach transport to Boise. Many people think Kuna means "the end of the trail," but Charles S. Walgamott cites the origin of the name as a Shoshone Indian word meaning "green leaf, good to smoke."

South of Kuna you can find Kuna Caves, an underground lava flow cave.

A small seasonal creek, now used as a canal for irrigation water, Indian Creek, runs through the town. One of the few small floatable waterways in the region, Indian Creek is a favorite tubing spot for local residents.

In the town's center is Colonel Bernard Fisher Veteran's Memorial Park, named after one of the town's most famous residents, Bernard Francis Fisher; Bernie to his friends. In January 1967, Major, U.S. Air Force, 1st Air Commandos was awarded the Medal of Honor "For conspicuous gallantry and intrepidity at the risk of his life above and beyond the call of duty." An accomplished pilot, he risked his life to save a fellow airman during Vietnam at A Shau. The Idaho Military Historical Society notes, "He could make his A-1E Skyraider attack bomber do the waltz, which is just what he did that day in far off Southeast Asia. There's no other way to explain how he danced it down that beat up airstrip, off into the wild blue."