The Picosa culture encapsulates the Archaic lifestyles of people from three locations with interconnected artifacts and lifestyles. It was named by Cynthia Irwin-Williams in the 1960s for those areas: Pinto Basin (PI), Cochise Tradition (CO) and San Jose (SA), which all together is "Picosa".
The people in the disperse locations in the American Southwest lived in similar housing, used similar burial practices and had similar lifestyles. The artifacts from the sites demonstrate similarity in the technology used and personal material goods. The Picosa culture has been found in the states of California, Arizona, Utah, New Mexico and Colorado. It was the predecessor to the Oshara Tradition.