Provided is a novel oxygen absorbent composition that is capable of realizing an oxygen absorbent that does not respond to metal detectors an increase in odor strength after oxygen absorption being suppressed in the oxygen absorbent composition and the oxygen absorbent composition exhibiting an excellent oxygen absorbing performance under broad humidity conditions from low humidity to high humidity. Also provided is an oxygen absorbent packaging etc. in which the oxygen absorbent composition is used. This oxygen absorbent composition includes: at least one compound having a tetralin ring represented by general formula (1) and a transition metal catalyst. (In formula (1) each of R R independently represents an oxygen atom or a monovalent substituent the monovalent substituent being at least one type selected from the group consisting of a halogen atom an alkyl group an alkenyl group an alkynyl group an aryl group a heterocyclic group a cyano group a hydroxy group a carboxyl group an ester group an amide group a nitro group an alkoxy group an aryloxy group an acyl group an amino group a mercapto group an alkylthio group an arylthio group a heterocyclic thio group and an imide group. The monovalent substituent may further have a substituent and two substituents from amongst R R may bond and form a ring.)
