Nelly Hedwig Diener (5 February 1912 – 27 July 1934) was the first European female flight attendant.Diener started flying for Swissair on 1 May 1934 and became known as the "Engel der Lüfte" ("Angel of the Skies" in English).
Diener died in the 1934 Swissair Tuttlingen accident.