No, you are strictly prohibited from bringing a Swiss Army Knife, or any other type of knife or weapon, into the Disney theme parks at Walt Disney World or Disneyland. Disney's security policy is very clear: "knives and weapons of any kind are prohibited" regardless of the size of the blade or its intended use (such as for cutting fruit). During the security screening at the park entrance, all bags are scanned and guests pass through metal detectors. If a Swiss Army Knife is found, security will not allow you to enter with it; you will either have to return it to your vehicle or hotel room, or surrender it to security, which often means it cannot be recovered. This policy also applies to multi-tools that contain a small blade. If you need to cut food for a child or for medical reasons, Disney's "Quick Service" dining locations can provide plastic cutlery, or you can ask a Cast Member for assistance. To ensure a smooth entry and avoid delays, it is best to leave all pocket knives and similar tools in your luggage or at home before heading to the theme park gates.