First aid is the provision of initial care for an illness or injury. It is usually performed by non-expert, but trained personnel to a sick or injured person until definitive medical treatment can be accessed. Certain self-limiting illnesses or minor injuries may not require further medical care past the first aid intervention. It generally consists of a series of simple and in some cases, potentially life-saving techniques that an individual can be trained to perform with minimal equipment.

While first aid can also be performed on all animals, the term generally refers to care of human patients.

First or 1st is the ordinal form of the number one. First or 1st may also refer to:

In international relations, aid (also known as international aid, overseas aid, or foreign aid) is a voluntary transfer of resources from one country to another, given at least partly with the objective of benefiting the recipient country. It may have other functions as well: it may be given as a signal of diplomatic approval, or to strengthen a military ally, to reward a government for behaviour desired by the donor, to extend the donor's cultural influence, to provide infrastructure needed by the donor for resource extraction from the recipient country, or to gain other kinds of commercial access.Humanitarianism and altruism are, nevertheless, significant motivations for the giving of aid.

Aid may be given by individuals, private organisations, or governments. Standards delimiting exactly the kinds of transfers that count as aid vary. For example, aid figures may or may not include transfers for military use: to cite one instance, the United States included military assistance in its aid figure until 1957 but no longer does. The most widely used measure of aid, "Official Development Assistance" (ODA) is such a figure. It is compiled by the Development Assistance Committee of the Organisation for Economic Co-operation and Development. The United Nations, the World Bank, and many scholars use the DAC's ODA figure as their main aid figure because it is easily available and reasonably consistently calculated over time and between countries. The DAC consists of 22 of the wealthiest Western industrialised countries plus the EU; it is a forum in which they coordinate their aid policies.