Genism is the theory that distinctive human characteristics and capacities are determined by genes. Genism may also refer to any and all discrimination based on the genotype of a person rather than their individual merits. In some circumstances this type of genism may constitute genetic discrimination, which in some forms is illegal in some countries (see the U.S. Genetic Information Nondiscrimination Act of May 21, 2008).

Genoism is a neologism coined by Andrew Niccol, director and writer of the 1997 film Gattaca, used to describe unethical and illegal genetic discrimination. Predictions of physical and mental performance are computed via genetics from DNA collected from hair, fingernails, skin flakes, spit swabs, eyelashes, etc. Upon birth, a number of genetically-induced characteristics are calculated: physical and intellectual capacity, life expectancy, probable successful diseases, and likely causes of death, all determined via blood samples and genetic testing. Job interviews, health insurance purchasing, and even potential dates can be sized up according to the perceived quality of the person's DNA due to advancements in genome sequencing. This put an ironic twist to Darwin's sexual selection for good genes. According to the movie, "We now have discrimination down to a science."

Sam Harris may refer to: