Alfred Flatow was a Germangymnast. He competed at the 1896 Summer Olympics in Athens. He was Jewish. Flatow was a successful competitor in 1896. He won the parallel bars, was the runner-up in the horizontal bar, and was a member of the German team that took the gold medals in both the parallel bars and the horizontal bar team events. He also competed in the vault, pommel horse, and rings competitions. Flatow's cousin, Gustav Flatow, was also a member of the German gymnastics delegation in 1896. After his return to Germany he and most of the other German gymnasts were suspended, because the Deutsche Turnerschaft boycotted the Olympic games with the reason that competing is "unGerman." In 1903, Flatow assisted the founding of the Judische Turnerschaft, the historic and pioneering Jewish sports organization in Europe. A gymnastics teacher since 1890, he started writing books about his sport in the early 20th century. In 1933, Flatow was forced to "voluntarily" end his gymnastics club membership, as he was Jewish. He was prominently active in German gymnastics until expelled by the Nazis in 1936. A co-founder of the Jewish Gymnastics Club, he was nevertheless honoured at the 1936 Olympics, where all German Olympic champions were invited. Flatow emigrated from Germany to the Netherlands in 1938 due to Nazi persecution of Germany's Jewish community. The Netherlands was invaded by Nazi Germany in May 1940. On 3 October 1942 Flatow was deported to Theresienstadt concentration camp in spite of appeals by the highly placed gymnastics official Christian Busch, where he died of starvation at the age of 73 before the end of the year. His cousin Gustav Flatow was also a victim of the Holocaust; Alfred died in Theresienstadt Ghetto on 28 December 1942, Gustav on 29 January 1945.
In 1997 Berlin honoured Alfred and Gustav Flatow by renaming the Reichssportfeldstraße near the Olympic Stadium to Flatowallee. There is also the Flatow-Sporthalle at Berlin-Kreuzberg with a commemorative plaque for both. The Deutsche Post issued a set of four stamps to celebrate the 100th anniversary of the modern Olympic games. One of this stamps shows the Flatows.