Henri Lammens (1 Jul 1862 – 23 Apr 1937) was a Belgian Orientalist historian and Jesuit, who wrote (in French) on the early history of Islam.
Born in Ghent, Belgium of Catholic Flemish stock, Henri Lammens joined the Society of Jesus in Beirut at the age of fifteen, and settled permanently in Lebanon.
During his first eight years in Lebanon, Lammens mastered Arabic as well as Latin and Greek, and he studied philosophy at the Jesuit-run Saint Joseph University in Beirut.
Starting in 1903 he taught Islamic history at the Oriental Studies Department at Saint Joseph University in Beirut.
[2] Henry Lammens published one of the earliest in-depth pieces on Zionism in Arabic in 1899 in the journal al-Machriq, titled The Jews in Palestine and their Settlements.