The O visa is a nonimmigrant visa category in the United States designed for individuals with extraordinary abilities or achievements in specific fields, such as sciences, arts, education, business, or athletics. Divided into various subcategories, including O-1A for those with extraordinary abilities in the sciences, education, business, or athletics, and O-1B for those in the arts or those with extraordinary achievements in the television or motion picture industry, the O visa allows these individuals to work temporarily in the U.S. and contribute their exceptional talents to American endeavors.