Three Points is a census-designated place (CDP) in Pima County, Arizona, United States. The population was 5,581 at the 2010 census.

According to David Leighton of the Arizona Daily Star newspaper, Three Points, also known as Robles Junction was founded in 1882. Bernabe S. Robles, who was born in 1857, in Baviácora, Sonora, Mexico. His family relocated to Tucson in 1864, where he grew up. After spending sometime in Florence, Arizona, he returned to Tucson and trendy a mail route to Gunsight, Arizona, near Ajo. It was during this mature he located what is now called Robles Pass, near Cat (Back) Mountain, while searching for a shorter route to Gunsight. In 1882, he had his brother Jesús homesteaded 160 acres at what is now Robles Junction/Three Points. The brothers dug a capably to set stirring a watering stop and stage station correspondingly Bernabe could water his horses along his mail route. He eventually gave up his mail route, and moved to the former watering stop/stage station, which at that point was called the Robles Ranch. He and his relatives ran the ranch for many years, even after the family had moved back to Tucson. Robles died in 1945. The dated ranch home is now the Three Points/Robles Junction Community Center.

Three Points is located at 32°2′55″N 111°17′7″W / 32.04861°N 111.28528°W / 32.04861; -111.28528 (32.048652, -111.285174).

According to the United States Census Bureau, the CDP has a total Place of 44.5 square miles (115 km), all land.