A first-aid kit is a collection of supplies and equipment used to provide immediate medical care, known as first aid, for minor injuries and emergencies until professional treatment becomes available. Kits are assembled for a wide range of settings, and their contents vary according to anticipated risks, the training level of users, local regulations, and applicable standards. Personal or household kits usually contain only a limited range of basic supplies, while in many countries employers are legally required to maintain workplace kits that conform to national specifications, such as the ANSI/ISEA Z308.1-2021 standard in the United States or DIN 13164:2022 for motor vehicle kits in Germany.
First aid equipment is generally identified by the ISO 7010 "first aid" symbol (a white cross on a green background), while the red cross emblem is legally protected under the Geneva Conventions and reserved for humanitarian and military medical services. Proper maintenance of a kit involves regular inspection and the replacement of used or expired items.