A polyketone composition contains: a polyketone containing a structural unit represented by the following Formula (I), and inorganic particles; in which a content of the inorganic particle is from 10 parts by mass to 70 parts by mass, based on 100 parts by mass of a total amount of the polyketone and the inorganic particles, and an average particle diameter of the inorganic particles is from 10 nm to 200 nm. In Formula (I), each X independently represents a bivalent group that has from 1 to 50 carbon atoms and that may have a substituent group, each Y independently represents a bivalent hydrocarbon group that has from 1 to 30 carbon atoms and that may have a substituent group, and n represents an integer from 1 to 1,500