Affinity

Affinity may refer to:

Commerce and law

Affinity fraud, a type of scam targeting a specific demographic
Affinity analysis, a market research and business management technique
Affinity marketing, a method of extending market reach by forming partnerships and cross-selling relationships
Affinity (law), kinship by marriage

Affinity (canon law), a kinship arising from the sexual intercourse of a man and a woman
Affinity (Christian organisation), formerly known as the British Evangelical Council
Affinity group, small protest or activist groups of 10-30 people

Affinity chromatography
Affinity electrophoresis
Affinity laws, in hydraulics, used to express the relationship between variables involved in fan or pump performance
Affinity (mathematics), an affine transformation (which preserves collinearity)
Affinity (pharmacology), in biochemistry, protein-ligand binding
Affinity (sociology), shared interests and commitments between persons in groups, "willingness to associate"
Affinity (taxonomy), mainly in natural history - resemblance suggesting a common descent or type
Electron affinity
Processor affinity, a computing term for the assignment of a task to a given core of a multicore CPU
Chemical affinity, the willingness of two or more elements or compounds to form a chemical or attractive bond of some type

Affinity, Cambridge University Eco Racing's first vehicle and the UK's first road legal solar car

Affinity (band), A Jazz/Rock band active in the late 60s and early 70s
Affinity (Philippines band), a collective of Manila's premier jazz musicians
Affinity (Fire Emblem), the numerous bonuses units in the videogame Fire Emblem have from sharing support conversations with one another
"Affinity" (Stargate SG-1), a season 8 episode of Stargate SG-1
Affinity (novel), 1999 novel by Sarah Waters
Affinity (film), a 2008 feature film based on Sarah Waters' novel
Elective Affinities, the concept of chemical affinities as a metaphor for human emotional affinities