| Age | 30 (age at death) |
| Birthday | 6 July, 1887 |
| Birthplace | Eisenach, Saxe-Weimar-Eisenach, German Empire |
| Died | 16 October, 1917 |
| Place of Death | Pöide Parish, Governorate of Livonia, Russian Empire |
| Zodiac Sign | Cancer |
| Nationality | German |
| Occupation | Writer |
Walter Flex (6 July 1887 – 16 October 1917) was a German author responsible for The Wanderer between the Two Worlds: An Experience of War (Der Wanderer zwischen beiden Welten) of 1916, a war novel dealing with themes of humanity, friendship, and suffering during World War I. Due to his idealism about the Great War and the posthumous popularity of his writing, Walter Flex is sometimes compared to Allied war poets Rupert Brooke and Alan Seeger.
