An expert is someone widely recognized as a reliable source of technique or skill.

Expert or EXPERT may also refer to:

Science and technology Expert (company), a Swiss consumer electronics retail chain Gradiente Expert, the second and last MSX home computer launched in the Brazilian market European eXPErimental Re-entry Testbed (EXPERT), a European Space Agency research programme

Other uses Expert (magazine), a Russian weekly business magazine Expert (video game), a 1996 Japanese video game Peugeot Expert, a model of light commercial vehicle

See also The Expert (disambiguation) Expert system, in artificial intelligence Expert witness, a person whose opinion is accepted by the judge as an expert X-Perts, a video game