Surrogate

A surrogate is a substitute or deputy for another person in a specific role and may refer to:

Relationships

 * Surrogacy, an arrangement where a woman agrees to carry and give birth to a child for another person who will become its parent at birth
 * Surrogate partner therapist, in sexual therapy
 * Surrogate marriage, a custom in Zulu culture

Economics

 * Ersatz, an artificial replacement differing in kind from and inferior in quality to what it replaces.
 * Surrogation, a psychological phenomenon in management science

Arts

 * Author surrogate or audience surrogate, reciprocal literary techniques
 * The Surrogates, a comic book series
 * Surrogates (film), a 2009 film based on the comic book series
 * The Surrogate (1984 film), a Canadian erotic film starring Art Hindle
 * The Surrogate (1995 film), a TV movie starring Alyssa Milano
 * The Surrogate (2020 film), an American LGBT-related Independent drama film
 * The Surrogate, original title of The Sessions, a 2012 film starring John Hawkes, Helen Hunt, and William H. Macy
 * "Surro-Gate", an episode of the cartoon series American Dad!
 * "The Surrogate" (The Outer Limits), an episode of the 1990s version of The Outer Limits series
 * Surrogate Paintings, a series by American artist Allan McCollum

Science and technology

 * Surrogate model, used in engineering design
 * Surrogate endpoint, a measure of effect in clinical trials
 * Surrogate key, a unique database identification key
 * Surrogate proxy, a type of server network setup
 * Surrogate mechanism, which allows UTF-16 to represent Unicode code points beyond the Basic Multilingual Plane as a pair of surrogate code points
 * Surrogate data testing, a technique for identifying possible nonlinearity in data.
 * Surrogate, used in library science. Metadata is created to represent information resources. The metadata serves as the surrogate for stored information resources.
 * Surrogate species, used in ecology and conservation biology to indicate the following:
 * Flagship species, chosen to support the marketing of a conservation effort
 * Indicator species, which reveals the qualitative status of the environment
 * Keystone species, which has a large effect on its environment
 * Sentinel species, used to detect risks to humans by providing advance warning of a danger
 * Umbrella species, whose protection indirectly protects many other species sharing its habitat

Other uses

 * Surrogate (clergy), a deputy of a bishop or ecclesiastical judge
 * Surrogate Court, a court primarily concerned with the distribution of assets of a decedent
 * Surrogate alcohol, a substance containing alcohol that is consumed, though it is not meant for human consumption