The object of the present invention is to provide a container holding member that is capable of simply, surely, and stably holding a plurality of medical containers, and that is usable efficiently for medical containers. The present invention is a container holding member capable of holding a plurality of bottomed tubular medical containers. The container holding member is provided with a flat plate-like substrate section having a plurality of through holes penetrating one surface and the other surface and a plurality of tubular housing sections each having an upper side opening end on a side of the one surface of the substrate section and a lower side opening end on a side of the other surface and each protruding upward or downward from a hole edge of each of the through holes. The tubular housing sections are each configured to be capable of holding each of the medical containers in a state where an outer bottom surface of each of the medical containers protrudes downward from the lower side opening end when the medical containers are housed in the tubular housing sections.
