Alfred Dreyfus was a French artillery officer of Jewish ancestry from Alsace whose trial and conviction in 1894 on charges of treason became one of the most polarizing political dramas in modern French history. The incident has gone down in history as the Dreyfus affair, the reverberations from which were felt throughout Europe. It ultimately ended with Dreyfus' complete exoneration.

The history of the Jews in Alsace is one of the oldest in Europe. It was first attested to in 1165 by Benjamin of Tudela, who wrote about a "large number of learned men" in "Astransbourg"; and it is assumed that it dates back to around the year 1000. Although Jewish life in Alsace was often disrupted by outbreaks of pogroms, at least during the Middle Ages, and reined in by harsh restrictions on business and movement, it has had a continuous existence ever since it was first recorded. At its peak, in 1870, the Jewish community of Alsace numbered 35,000 people.