Nelly Hedwig Diener (5 February[1] 1912 – 27 July 1934) was a Swiss flight attendant.

She was the first female flight attendant in Europe.

[2] Diener started flying for Swissair on 1 May 1934 and became known as the Engel der Lüfte ("Angel of the Skies").

[3] She died in the 1934 Swissair Tuttlingen accident, along with the other two crew members and nine passengers.

This Swiss biographical article is a stub.