Adelheid Langmann (c. 1306–1375)[1] was a German Roman Catholic nun, belonging to the Dominican order at Engelthal Abbey in the 14th century.
[3] Langmann was a widow who belonged to a well-established family from Nuremberg, and recorded her revelations on the advice of a lector who worked at Engelthal Abbey.
According to Langmann, the marriage was never consummated, and her husband died of illness within a year of the wedding, leaving her free to join the Dominicans.
[5] She joined the order in 1330, and was present there, as was Christina Ebner, when King Charles IV visited the Abbey seeking spiritual counsel.
[6] During her lifetime she maintained a close friendship, and was a mentor to Marquart der Tokler of Nuremberg, a nobleman and later, cleric who later joined the Augustinians under her guidance, and who recited prayers especially composed for him by Langmann.