| Nelly Diener | |
| Birth Date: | 5 February 1912 |
| Death Place: | Near Tuttlingen, Germany |
| Death Cause: | Airplane crash |
| Nationality: | Swiss |
| Other Names: | German: Engel der Lüfte ("Angel of the Skies" in English) |
| Occupation: | Flight attendant |
| Years Active: | 1934 |
| Employer: | Swissair |
| Known For: | Being Europe's first female flight attendant |
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 German: 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.[4]