Association may refer to:
Voluntary associations, groups of individuals who voluntarily enter into an agreement to accomplish a purpose
- 501(c) non-profit organization (USA)
- Alumni association, an association of former students of a college or university
- Professional association
- Sports association
- Trade association, another name of an industry trade group
Associations in various fields of study:
- Archaeological association, in archaeology, the relationship between objects found together
- Association (astronomy), combined or co-added group of astronomical exposures
- Association (chemistry)
- Association (ecology)
- Association (genetics)
- Association (object-oriented programming), a kind of grouping in object-oriented programming
- Association (psychology), a connection between two or more concepts in the mind or imagination
- Association (statistics)
- File association, associates a file with a software application capable of opening that file
- Free association of producers, the goal of anarchists and communists
- Security Association, the establishment of shared security attributes between two network entities to support secure communication
Names of particular entities or things:
- Continental Association, often called the "Association", an economic boycott during the American Revolution
- HMS Association (1697), a Royal Navy ship which sank in 1707
- L'Association, a French comic book publisher
- The Association, a pop band