Yes, you may request an extension of stay on a B-2 tourist visa by filing Form I-539 with USCIS before your authorized stay expires. Approval is not guaranteed, and you must provide a valid reason and proof of financial support.

B-2 visa holders can apply to extend their stay in the U.S., but they must do so before the expiration date listed on their I-94 record, not the visa stamp. To qualify, you need to show that your visit is temporary, that you have sufficient funds to support yourself, and that you will return home after your visit. Overstaying without approval can result in penalties or future visa denials.

U.S. immigration law allows B-2 visitors to request an extension for up to six additional months if they demonstrate compelling reasons, such as medical treatment or extended tourism. The request must be filed with USCIS in a timely manner, and unauthorized overstay can negatively impact future immigration benefits.