A storage container, a packaging member, and a medical instrument set are reduced in size and can reduce the burden of preparing medical instruments. The storage container includes side face parts surrounding a first space and a second space for accommodating an introducer, a first storage part in which a catheter hub is disposed, a second storage part in which a tubular member is disposed in a state in which a connector unit is disposed in the second space, and a third storage part in which a dilator hub is disposed. The third storage part is disposed between the first storage part and the second storage part.
