Petra

Petra was the mascot for the 1992 Summer Paralympics in Barcelona. She was an armless girl with a positive attitude. She was inspired by Lorenza Böttner, who had lost her arms in an electrical accident as a child and became famous for her art despite her disability.

Petra Mede is a Swedish comedian who was the sole host of Eurovision 2013 and one of the two hosts of Eurovision 2016 (alongside Måns Zelmerlöw).

I'm surprised that no one on this page has mentioned Petra from Minecraft: Story Mode! :)

Petra Ral is a character from a Japanese anime "Attack on Titan" that aired in 2013.

Petra Parker is a Marvel Comics character. She is a girl from another dimension and is the equivalent of Peter Parker. She fights crime under the alias: Spider-Girl.

PETRA SOLANO from the CW television series "Jane the Virgin" is a famous bearer of the name, and the first that comes to mind for me. She is played by Yael Grobgras and is part of the main cast.

Petra is the name of a German speech synthesiser produced by Svox.

Petra Brohäll is a Swedish singer, member of an ensemble called Erato.

Petra Stunt is a British-born heiress, model, fashion designer and socialite. Stunt was born in London as the younger daughter of Croatian former Armani model Slavica and English Formula One billionaire Bernie Ecclestone. She has an older sister, Tamara Jane, and an older paternal half-sister, Deborah.

Welsh-born actress Petra Davies (b. 1930), in her heyday a lovely brunette starring in many television plays, etc.

Petra is the name of a character in "The Chrysalids" by John Windham.

Petra Čumplová, Czech handball player (7th May 1973, Praha).

Famous bearers:
Actress Petra Martincová
Director Petra Všelichová
Actress Petra Nesvačilová
Model Petra Faltýnová
Tennis player Petra Cetkovská
Hair dresser Petra Měchurová
Actress Petra Jungmannová
Politician Petra Buzková

Petra Andalee from Blue Balliett's "Chasing Vermeer."

Famous bearer:
Model Petra Němcová ("Niem:tsaw-va"), born 24 June 1979, Karviná, Czechoslovakia.

There's a tomboy character named Petra in Ender's Game written by Orson Scott Card.

And yet more famous bearers: Petra Páchová and Petra Pudová (both of them Czech singers)

Czech famous bearer:
Petra Minářová - model.

The famous sculptor and typographer Eric Gill called his daughter Petra, ostensibly because of the name's association with stone.

There's a Christian rock group called Petra.

Also the site of an ancient trade city in the middle east.

I always think of the character in the film "When Night is Falling".