AID may refer to:

• Activation-Induced (Cytidine) Deaminase, an enzyme
• Algebraic Interpretive Dialogue, an implementation of JOSS II for the PDP-10
• Americans for Informed Democracy, an American non-profit organization
• Artificial Insemination by Donor, a type of human artificial insemination in which donor sperm are provided by an individual other than the recipient's partner
• Association for India's Development, an American/Indian non-profit organization
• Automatic Interaction Detection, a precursor to, and component of CHAID
• Amputee identity disorder, now more commonly known as Body integrity identity disorder, a controversial psychological and neurological mental disorder.
• Autoimmune disease, a disorder with an overactive immune response of the body.
• Aid (rapper) (born 1990), stagename of Aida Alonso Iglesias, a Spanish rap singer.

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 bezeichnet:

• Aid (Fluss), ein Nebenfluss der Würm in Baden-Württemberg

AID peut faire référence à :

• Association internationale de développement

Aïd (ce qui donne différentes transcriptions : eid, aid, `id) signifie « fête » en arabe.

Bistånd är ett begrepp som normalt används för större bidragsgivare där syftet är att bidra till minskad fattigdom, ökad demokratisering och en hållbar utveckling i andra länder. Det kan även användas vid större katastrofer, men de flesta biståndsorganisationer arbetar i första hand långsiktigt och förebyggande.