The musician was due to headline the Jersey Live festival on Sunday (September 2), when crew members found and caught a green-fanged spider in one of his flight cases.
Organisers were forced to quarantine a backstage area for 20 minutes after the discovery.
Jersey Live spokeswoman Jayne Houghton said: "The Jersey crew members were unpacking Noel's flight cases when a huge black spider with green fangs came out with a flourish.
"Staff immediately set about catching the spider and an area backstage had to be quarantined for nearly 20 minutes.
"Luckily there were members of Durrells Wildlife Conservation Trust at the festival, who kindly took the spider away for analysis.
"Noel had not arrived at the gig and so was blissfully unaware of the panic the spider caused."
Animal experts from Durrell Wildlife and Conservation Project were at the event collecting cans to raise funds, when they were asked to come backstage.
Sarah Nugent of the Jersey charity said: "We are having the spider analysed at the minute.
"We found out that the crew had been to most parts of the world during their tour, including Argentina and Japan.
"But Noel has also been to places like Chelmsford, so the spider could have hitched its ride at any point, or simply walked in from a nearby field here in Jersey."
She added: "We were really lucky because we got taken backstage, which was great for us, and the crew had already put the spider in a plastic container.
"It was the size of a 50p piece with green fangs. We used the team's laptop to see if we could Google what the spider was.
"There are hundreds of thousands of species of spider worldwide so it is going to be a difficult one to decipher."
Noel Gallagher's High Flying Birds will perform at London's Roundhouse for this year's iTunes Festival on September 12.
Watch the Noel Gallagher 'Everybody's On The Run' video below: