The 'Anything Could Happen' singer's role came about after she recently revealed that she is a big fan of the MTV reality show.
The show's star Vicky Pattinson confirmed that Goulding recently joined the cast on set in Newcastle.
"Ellie was doing a show at the Metro arena and she came to the same club we were in afterwards and made a beeline for us," Pattinson told The Sun.
"She wasted no time telling us what a massive fan she is and went into depth talking about storylines and everything.
"So in the end we gave her a cameo. She was a lovely girl, and it was great to meet her and have her involved with the show."
Goulding recently stated that she likes to record and watch Geordie Shore episodes while touring.
She said: "I'm obsessed with it. They just live to party, go and get tans, go to the gym and go out drinking, but I love it.
"I think my friends think I'm a bit weird. It's fascinating."
Geordie Shore's latest series starts on Tuesday, November 6 at 10pm on MTV.