Non-immigrant visas are permits that allow foreign nationals to enter a country temporarily for specific purposes, such as tourism, business, or study. These visas are not intended for individuals who plan to stay permanently. Each type of non-immigrant visa has its own requirements and limitations, depending on the purpose of the visit. Common categories of non-immigrant visas include tourist visas, student visas, and work visas. Applicants must typically provide documentation, such as proof of financial support and a valid reason for their visit, to obtain these visas.