A plate clamp where clamp resistance when a tube is slid from an insertion hole to a slit section is low, where clamping operation is easy, and where the tube being clamped at the slit section is less likely to unintentionally slide to the through-hole side. The clamp for a tube has the slit section for clamping and holding the tube at plate-like members, a tube lead-in section as a groove forwardly expanding from the forward end of the slit section, and the tube insertion hole continuously formed with the tube lead-in section. A stopper section is provided only on one side of the boundary between the tube lead-in section and the slit section.
