Fidelio
Latin
"faithful"
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By Nameberry
Updated Tue Feb 03 2026
Fidelio Origin and Meaning
Variation of Fidel
The name Fidelio in Pop Culture
- Fidelio Gunncharacter in Jenny Nimmo's "The Children of the Red King" series
- Fideliothe only opera by Beethoven, which tells how Leonore, disguised as a prison guard named "Fidelio," rescues her husband Florestan from death in a political prison.
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Introducing the Nameberry App
Find your perfect baby name together with our new mobile app.
- Swipe through thousands of names with your partner
- Names you match on are saved to your shared list
- Get personalized recommendations that learn based on your and your partner's preferences
- Partner with friends and family to find names you all love
- Backed by Nameberry's 20 years of data around name preferences.
Sign up to be notified when the app launches and to receive a discount on full access.