Hans Friedrich Wilhelm Hugo Koeppen (July 31, 1876 in Minden – July 10, 1948 in Berlin) was an officer in the Prussian army, the German Reichswehr, and a participant in the first car race around the world.

He joined the 2nd Westphalian Infantry Regiment, and in 1894 was promoted to second lieutenant. He rose through the ranks and became a full colonel in October 1939, and major general in April 1944, shortly before retiring.

As a lieutenant he took part in the first touring car rally around the world: the 1908 New York to Paris Race.^[1] Koeppen had never driven before. Koeppen's car, the Protos Wettfahrtwagen, was the first to arrive in Paris, beating the next competitor by four days. However he was penalized because he had used a rail-car for part of the journey and skipped Alaska, and thus lost first place.^[2] In 1909, his book about the race, Im Auto um die Welt ("The World by Car") was published and it made him a celebrity, or folk hero, in Germany. His fame helped to popularise the toothbrush moustache in Germany, the same style later adopted by Adolf Hitler.^[3]