A transport container is configured to capture air bubbles remaining in a container with a simple mechanism and a simple operation to protect a graft. The transport container includes: a lid that seals a container for housing a graft, in which the lid has a protrusion protruding toward a space inside the container in a state of being attached to the container. A substantially annular groove is formed on a lower surface of the protrusion. Gas and liquid inside the container housing the graft and liquid are pushed out by the lid to achieve a liquid-tight state, and air bubbles in the liquid can be captured in the groove on the lower surface.