ORAC

ORAC or Orac may refer to:


 * Oxygen radical absorbance capacity, a scalar value derived in the laboratory for comparing the antioxidant content of different foods or nutritional supplements
 * Office of the Registrar of Aboriginal Corporations, former name of the Australian government agency now called Office of the Registrar of Indigenous Corporations (ORIC)
 * Orac (Blake's 7, a computer in the science fiction television series Blake's 7
 * Orac (MD program), a classical molecular dynamics program for solvated biomolecules
 * Orac, Leova, a commune in Moldova
 * Orac, an early poker-playing computer program developed by Mike Caro
 * ORAC, Wilhelm Reich's abbreviation for his orgone accumulator


 * People
 * Orac, pseudonym of David Gorski, cancer surgeon and blogger critical of alternative medicine
 * Costel Orac (born 1959), Romanian footballer
 * Daniel Orac (born 1985), Romanian footballer