Vizeflugmeister Alexander Zenzes (10 July 1898–September 1980) IC was a German World War I flying ace. He was a German naval pilot credited with 19 confirmed aerial victories.

After World War I, he gained a Doctorate in Engineering. In 1926, he moved to the United States. Although he became a naturalized citizen, in 1942 the Federal Bureau of Investigation suspected him of being a subversive.

Alexander Zenzes was born on 10 July 1898 in Chemnitz, Saxony.^[1]

There is no information about him until he appeared on the rolls of Marine Flieger Jagdstaffel II by scoring his first aerial victory on 5 June 1918. He had run his total to six by the end of the month. He was awarded the Iron Cross First Class during the summer. On 22 July 1918, he was wounded by anti-aircraft fire.^[1] On 30 July, he was promoted to Vizeflugmeister. Two days later, on 1 August, he received more serious wounds that kept him out of action until September. Upon his return, he would score ten victories in October 1918 alone, running his total to at least 19 confirmed victories.^[2]

Immediately postwar, Zenzes would serve in Gotthard Sachsenberg's Marine Freikorps, battling the communist insurgents.^[1]

During the early 1920s, Zenzes earned a Ph.D in Engineering. In 1926, he moved to the United States. In 1929, he applied for citizenship; he became a naturalized American in 1934. He lived in San Francisco until World War II. He worked as a clerk and a sales manager while conducting chemical research. By 1942, the Federal Bureau of Investigation suspected him of being a German agent carrying out subversion in Mexico.^[1]

He was last heard of living in New York City in the 1950s.^[1]

He died in September 1980, and was buried in Middle Village, New York.^[3]

Website forum with further details and speculations on his life: http://www.theaerodrome.com/forum/showthread.php?t=52334&highlight=alexander+zenses

• Above the Lines: The Aces and Fighter Units of the German Air Service, Naval Air Service and Flanders Marine Corps, 1914–1918. Norman Franks, Frank W. Bailey, Russell Guest. Grub Street, 1993. ISBN 0-948817-73-9, ISBN 978-0-948817-73-1.