Reinhardt John Keppler (January 22, 1918 – November 15, 1942) was an American navy serviceman who posthumously received the Medal of Honor for his actions during the Naval Battle of Guadalcanal in World War II.

During the war Boatswain's Mate First Class Keppler participated in action at Pearl Harbor, the early wartime raids on Bougainville and New Guinea, and the Solomon Islands campaign.

[2] When a Japanese bomber crashed into his ship on November 12, 1942, at the beginning of the Naval Battle of Guadalcanal, he assisted in caring for the resulting casualties.

When a hostile torpedo plane, during a daylight air raid, crashed on the after machine-gun platform, KEPPLER promptly assisted in the removal of the dead and, by his capable supervision of the wounded, undoubtedly helped save the lives of several shipmates who otherwise might have perished.

That night, when the hangar was set afire during the great battle off Savo Island, he bravely led a hose into the starboard side of the stricken area and there, without assistance and despite frequent hits from terrific enemy bombardment, eventually brought the fire under control.