Disclosed herein is a device for machine perfusion of an organ that includes a chamber including an organ support platform for supporting an organ and a perfusion circuit for providing an oxygenated perfusion fluid to the organ and carrying oxygen-depleted perfusion fluid away from the organ. The organ support platform includes perforations for fluid drainage. In some examples, the organ support platform is substantially horizontal. The device also includes a pump for circulating the perfusion fluid through the perfusion circuit, an oxygenating device in the perfusion circuit to oxygenate the perfusion fluid, and a temperature regulator for controlling the temperature of the perfusion fluid in the perfusion circuit. The device in some examples also includes a vascular perfusion cannula through which the perfusion fluid can flow to an organ placed on the organ support platform. Also disclosed are methods of perfusing an organ utilizing the machine perfusion devices.