Reinhold Poss (11 September 1897 – 26 August 1933) was a German flying ace and racing pilot. Poss enlisted with the German Navy during World War I and scored eleven kills as a naval pilot. In May 1918 he took command of the Seefrontstaffel and in September 1918 of the IV. Marinefeldjasta, which he led until 15 October, when he was shot down and captured. He spent the final month of the war in a POW camp.